He is quite balanced. Exceptionally balanced even.
I am feeling kinda cynical so I will play devil's advocate...
As a question to the whole concept of "functional" training, when the heck are you ever on unstable surfaces in sports anyways?
They are actually coming out with research showing unstable surface training is ineffective...
My first thought before the dude stepped onto the ball is he looks like he would get picked last in gym class lol. Maybe not if they were playing ping pong on bosu balls? Not exactly a guy I would want to model my training after....
What I consider to be a crazy workout video
(I guess this would show our differences in training styles):
I consider this to be an amazing feat... Baseball player no less
A couple more cool ones
An intense training partner (turn up the volume and listen)