What you forget about Sheldon (as a UNC fan I hate saying this) is the guy plays on an island. Yes 1 on 1 he get's destroyed by some players, that happens to all players even really good ones. Do you remember how Shaq man handled Ben Wallace in the finals b/c they were always going at it 1 on 1, although Detroit pulled out the victory? If you don't get help of course your going to get destroyed sometimes. Ben Wallace is still one of the best defenders in the league, no?
If we brought in Sheldon, I don't think we'd leave the guy out an island. We'd give him some help. He has size, he has blocking and he can score something all but Aldridge can do. I don't even see him starting but sharing minutes his first year with our crew of bigs.
I haven't watched much of Texas, but I'm assuming Aldridge get's more help. I know UCONN has a lot of help. Sheldon might be flawed, I think all college players are flawed and most pros are flawed but we could really use some of his ability.