Some points to note, for those scrolling down here:

I got the numbers wrong for timing. They should be:

Kassai (left side, from hand): 12 arrows in 17 seconds = ~1.4s per shot
Cozmei (right side, from quiver) 10 arrows in 15.1 seconds = ~1.5s per shot
Cozmei (right side, from hand) 8 arrows in 11.58 seconds = 1.45s per shot (see: https://www.youtube.com/watch?v=rNoizKR3NCs)
Andersen (right side) = 0.5s per shot*

All are right-handed archers.

Without significant modifications to equipment and technique, Kassai and Cozmei are pretty much at the maximum of what a person can physically achieve in shooting speed, considering that they are aiming at a target and reaching full draw.

Andersen is exceptional in that his speed feats are not dependent on accuracy. His fastest shooting technique involves holding the bow low, drawing very short and only shooting at extremely close targets (or into the air). It's purely to accomplish the fastest possible speed. Do note that his feats of accuracy do not use this technique - he does slow down and use full draws.

"But this wasn't used in war..."
This isn't a discussion that focuses on war archery. The point is that speed loading and speed shooting isn't tied directly to which side of the bow is used. Both sides were used to shoot at roughly the same speed in a steady tempo (3-5 seconds), slower if necessary (to conserve arrows or stamina), and highly skilled and trained archers could use more advanced holding and loading methods to bring that time under 2 seconds. If we bring war into the context, we'd have to consider that an archer would NOT use up all their ammunition in less than a minute, that they would pick their targets and used aimed shots, and that proper shot execution is needed for power and accuracy.

Calm, informative amd always down to the facts - this is how I like my NuSensei videos

I am a horseback archer myself and I really enjoy your videos!!
And I would be reeeeally interested in a video about what the actual reason is for left/right side shooting!
And in what ways shooting with a sight differs from shooting bare bow (in terms of technique, apart feom using a sight, obviously)

"Which side is faster?"

The one that kills first.

As a trad archer who was on both sides. (Shot, so literally on the other sides) I think basically, it depends entirely on what preferred tradition/technique you want to follow. Want to shoot Olympic? Well you're basically following what could be called 'Western Archery' so you shoot on the left hand side. If you want to shoot Turkish style, put it on the right side. This is not because Turks have shot like that, or that Olympic archers have always shot off that side of the bow.

Every tradition/style is a whole sport on it's own tbh. Because Olympic archery presumes I shoot on the left side, all it's technique, form and equipment are attuned to this. Likewise with most traditional styles,  so Turkish archery would not really work if I shoot on left side, because the technique, equipment and form would not be optimized for it. Neither would me shooting with a thumb draw from  the right side of an Olympic recurve, really work in any way shape or form.

I do think, there is no inherently faster side. But a thumb draw does allow you to hold more arrows in the draw hand in my experience. Then again I've seen 3 finger shooters do equally crazy impressive stuff. Best thing to do, rather than choosing a faster side, seems to be  to choose the proper side for your style. There is no "right" side, just a right and left side, like there is no single 'right' style.

That was fantastic! Thank your educating me! I love when you do your archery stuff as opposed to your tank gaming content!

I believe you succeeded in providing a thorough, unbiased and professional view of the topic. The respectful tone is admirable. Stay the route!

thats true for me i had this dilemma myself.. because more arrows is awesome but.. i always find myself "guessing where my mark" rather then when I see the arrow, I know I see the mark. i just prefer pinpoint accuracy. and its fairly fast yet effective

If you ever try lars'way of holding arrow, you will find it's faster on the right side. No matter half draw or full draw. It is just a method of loading the next arrow while holding some arrows in your draw hand.
I achieve 1.5s per arrow after just 3 days practising (1h/day ) with my 40 pound bow. And I don't need to place the arrows in a particular position, I can adjust it's orientation while shooting. It means that I can easy grab and shot arrows from the package after the first hand of arrows.
The other way to achieve the same speed of the left side: Just hold the hold and release with your palm hand towards right side. Someone can make it at the same speed.

It might not be conclusive on which style is fastest, but at our club compound shooters are always the slowest, that’s for sure.

Personally I find I find shooting from the thumb side of the bow faster for me simply because you hold the arrow in place more, the thumb locks it in place, I can be less cautious with my shot cycle because I know the arrow will never fall, I can even shoot my bow upside down when using thumb.

For me, thumb draw with arrow on the right for speed, three under with arrow on the left side of the bow for accuracy.

Really good thought out video! Thank you for sharing!

Great analysis; totally agree on conclusion!

If you factor in the type of arrow tip, Cozmei’s is more realistic. You can’t use the Khassai form with arrows that have sharp sides, you would cut your hand every time. You can use a variant of it, where you “peel” the arrow, but it’s slower. So with real arrows, Cozmei’s version is safer and more realistic.

Great video, thanks

Thanks. I wish you would have talked about how why the right side was historically used. I also wish you had expanded on the difference in technique when nocking an arrow on the right side and the left, and how holding other arrows in your hand is compatible to, or how it can be achieved in both styles

I think one of the concepts of left and right side is from a quiver vs in hand.
As well as the amount of motions per shot.

Pull arrow, feed through to left side, knock and pull.
or
Pull arrow, knock and rest on thumb and pull.

I cannot say one is faster than the other or better. But the motion of grabbing an arrow, feeding it between the bow and the string to rest it on your hand in a quick forward motion vs just shooting it off your thumb would require more practice. However I believe your examples sure show the fact that the abilities are not far off of each other when it comes to speed which would lead more to personal preference in the long run vs which is better.

What about "Dagger method" used by Iza privezenceva? She shoots from left size of the bow and palm facing outside. But unlike mediterian grip, hands and arrows are at same side of the bow. Wouldn't it creat problem because of archer's paradox?

For me right side more better... I'm a beginner just play with bow a month ago ... I'm trying left side and i found out that it's is so hard...went i try right side it is more better for me and feel more comfortable

Shooting trad longbow/ warbow from a ground quiver next to your front foot is really quick if you don't need to be mobile...

The second guy looked like his camera was sped up.