... more consistent motor, more confident, better all-around game offensively, better hops, better shot blocker.
What maybe remains to be seen is what Boskos perimeter on-ball D looks like. Waterman had really good lateral mobility and could switch onto PGs defensively and stay in front of them as well as put up a decent effort battling opposing 5's in the post.
Another area where Waterman might be better is rebounding. He gave pretty good effort there. I'm sure Bosko can be a good rebounder too but he's going to have to show more effort.