A few things...
* Kaminsky is not a center, at least not at the next level. He simply can't guard the C position.
* Thinking he is a top 6 pick is nutty. Having success as a 22 year old senior, vs younger opposition, at a lower level is one thing. Doing so at the NBA level is quite another. Picking him that high based on his college accolades is not taking into account the progression the younger players you're passing on will make.
* The draft combine in a little over a month which will cause Kaminsky's stock to fall.
* Okafor's weakness is on the defensive end. However, he has great size and length for the position and those components give him the potential to be an adequate defender.
Okafor will undoubtedly go top two in the upcoming draft. Deservedly so. His skill, touch, and mobility around the basket for a guy his size are truly special qualities. However, if I'm an NBA GM, there are certainly things about him that would make me very nervous. I don't like his lack of foot speed or his seeming lack of conditioning.
They like to say that they can correct those things on the next level, but it doesn't always happen. I fear that Okafor could be the next Eddy Curry. Of course, he could prove me wrong and be the next Demarcus Cousins.
I'll admit that I'm basing most of my scouting report on Kaminsky on a couple of games, but, boy, was I impressed with his performances against the two top big men prospects in those games.
I absolutely think Kaminsky should be a center at the next level. Like Kelly Olynyk, playing him at center is the spot where a team will be able to best maximize his advantages and minimize his disadvantages. I think that for Kaminsky guarding perimeter oriented bigs on the perimeter will be more of a challenge than battling with bigger, stronger guys on the interior.
Just my two cents:
But, I think that Frank Kaminsky has a good shot at being one of the top five players from this draft class (that doesn't mean I think he'll necessarily be drafted in the top five; he probably won't).