Martin doesn't suck, he's just inconsistent. He's also young. If you want to apply the word suck to someone, I think Kendrick Perkins is a much better choice.
I can't believe he hasn't been mentioned as a total bust on this thread. He was too slow to keep up with the run and gun Rockets, so he didn't play much. Everyone seemed to think that the Grizzlies would be a better match up, but he has been awful in the first two games. Heck, he can't even hold on to loose balls and rebounds when he gets both hands on the ball. It's like he's playing with mittens on his hands.
Perkins would be a good role player on any team. But he is definitely not a starter. IMO, the Thunder will never win a NBA championship him in the starting lineup. I'll be shocked (and disappointed) if they don't trade him in the off season.
I didn't say he sucked overall, but he sure did last night. OKC can't win when he shoots 2-11.
As for the Thunder's low post presence, they don't have one. Ibaka has no back to the basket game and can't defend a back to the basket player.
Collison is probably their best post defender.