Oh okay, you don't think Sullinger can become much. Fair enough.
Don't know what you consider "much". I consider his absolute ceiling a Paul Millsap type of player -- conditional on a pile of ifs, such as staying in shape, and no further back issues (both considerable ifs, given past history).
So yes, if you come into this conversation from the standpoint that turning Sullinger into a Carlos Boozer is but a forgone conclusion, I'm afraid we have fundamental differences. I put much more hopes into the bigger, more skilled, and healthier player, even if he's a rookie.