1. Replay was decent. Indeed, needs more realism. You have a pretty bad mistake out here:
Frames 850 - 800. Notice that your hit was pretty fast, and you got your leg back in like a second, like you were afraid to hit uke. o_o Don't do that, better to relax your knee after the hit. would look better.
2. Replay was decent. Needs more confidence, and realism.
The problem here, is that you don't keep moving on by one direction. It's like brakedancing - you can just spin in 1 direction - right spin or left spin, and you may not just change it.
3. Better than the last two. The mistake here is when you make a movement of your body, like you jump off with your leg, you forget about the rest of the body and arms. And when you remember about the body, you forget about your legs and arms. Then in like another 100 frames, you start doing something with the arms and forget about your body and legs.
Hope you got the idea.
All in all 6.3/10.
Good luck in improving your skills bro.