I still haven't seen a successful post move from stiesma. I've seen dunks, but no fakes, up and unders, spin moves, etc. Erden actually had moves.
He doesn't have refined post game, but he doesn't have to. If he can hit the elbow jumper wit regularity, play defense, and hustle up the floor he'll be just what Doc ordered 
This^.
If Erden ever could stay healthy, I think he _could_ have been a better quality defender, but he just hasn't got there yet.
It think it's pretty clear Stiemsma _IS_ a plus quality defender already. He looks nearly as mobile as Semih ever did, but is clearly much stronger and he has a similar 'knack' for blocking and deviating shots. That's not just a matter of being long. It's a timing and instinct based skill - guys like Jermaine have it. Stiemsma clearly has it. He also showed last night that he's a good communicator on defense. He was very vocal on the floor, even pointing and directing people already! He's not a Mikki Moore who was athletic enough to play great 'man' defense but did not have the substance for being great on 'team' defense.
Offensively, I gotta admit that Semih looked to have much more potential as a scorer. He had a very soft touch shot and a good spin move. He was smooth.
But Stiemsma probably already provides more than the basic minimums we need from him on offense. We know he can dunk & finish at the rim. He has that nice, quick elbow jumper - that already puts him way ahead of where Perk was - and he can make free throws (which is always a great thing out of a big man).
All we need from our 5 is the _threat_ to do something on offense and that jumper and the ability to make foul shots means that Stiemsma can't be just ignored. His defender can't just sag off him to double our other big. With Perkins, it would drive me nuts how often his defender would basically leave him alone in order to double KG, knowing that if we did pass to Perkins he just could rush back and foul him - and Perk would miss the FTs.
