IMHO it's a combination of muscle mass, definition, and symmetry...which I think Ronnie has. Sure, you can find pro BBs with more definition, or more symmetry, but IMO Ronnie has an abundance of all 3 qualities.
For me BB used to be all about mass but know i prefer symetry and cuts so i don't like Ronnie now.IMO Cuts is the perfect BB.What do you think about that?