2) The 1 on 1 drill was pretty much all jump shooting/offense which we already knew he was terrible at. You can't evaluate him on a 1 on 1 workout, that's not his style, he can't do the things he's great at like block shots, rebound, pick and roll or put backs.
3) He is far from undersized. He has a bigger standing reach than vast majority of the starting Cs in the league and he's 250LB not 215 like Ed. On top of that he's VERY explosive.