If we were comparing flying squirrels, I would agree with you.
I'm going with RBY, because his positional awareness seems better. After he lands on two hands, he is already looking for the legs, balances on his left hand and reaches up for the trip with his right hand. Kolat pops up off of both hands before he initiates the next move.
Desanto had a nice flip last year as well.
This^^^I'm going to go with RBY just because Kolat landed on his head.
RBY's was much smoother.
For me I have to say Kolat's for 2 reasons.
1. I was at Hershey to witness Kolat's move in person, which I had never seen before.
2. The interest that supposedly Kolat had not given up a takedown in his senior year.
I have never confirmed that statement but that was being discussed going into his 4th gold medal match.
So as you can imagine it just added to Kolat's mystic when he pulled off the move.