You can see many differences in one movie

From technological point of view, I don't actually see many big differences between them.
Selling a running shoes is the sole objective of these. 

I see difference between them which part  they are focus on. That would be a key source of differentiation. 

思ったより

想像してたよりまだ手作業多いんですね。

KD9

悪くないグリップ。。

なぜか捻挫するイメージしかわかない。。

懸念であってほしいですけど。