Give him a few more anticipation frames, showing not just his legs bending, but his entire body preparing for a dodge, and some somersaults. Then at the sand up, make that also more convincing. You can't do a somersault and land perfectly on your legs ,physically impossible, and just looking like a lack of time spent on the perfectionizing on the animation (I'm not saying you did that, because I know you're working hard on this and making alot of edits to DO get it perfect, I'm just saying the current result lacks some time and polishing).