Well, my opinion is that at this point human kinematics is broken down and studied to near-perfection, we know what works and what doesn't, and when we don't - it takes a bout of computer modelling to get a comprehensive picture.
It means that at this point we have three basic options when it comes to design of moves:
1) Be realistic. Do your homework, research, make your gritty character.
2) Be artistic. Direct your moves as if you were staging a dance, try to be creative, make your elegant character.
3) Be ridiculous. Aesthetics is deeply subjective, but IMO this Bats tries to land here, as well as some other NRS characters or at least their moves did.
Since Bats is a normal human, this kind of applies to him. Actually, it's about suspension of disbelief. When we see something that is explicitly a human, we expect it to move like one, otherwise it may quickly become weird.