Re: Royce White
Sullinger and Royce White have a lot of similarities. Both are PFs who are probably too slow to defend athletic NBA SFs.
White's handle, back, and court vision are superior to Sullinger's.
Sullinger's jumper, size, and post skills are superior to White's.
Basically you are looking at a jump shot versus play-making.
The minor back issues and personality/anxiety issues are other factors.