I’m new to yoyoing. Is kitty fat better than normal for a responsive yoyo?
I would think so. 
Its kinda’ wide for thin gaps, it will cause it too throw out.
Depends on the kind of responsive yoyo. 
Even with Kitty Fat, I found it hard to keep my YYJ Classic responsive.
You don’t want it for wooden fixies, which are also responsive yoyos.
Kitty XXL would be better…
However, it wouldn’t be “god”