I think we knew DeMar isn't a superstar. With our weaknesses at other positions, as well as our injuries - four bigs out, basically forcing Amir and Ed to play even when it might have been nice to put in somebody with more offence at PF, you would expect OKC to focus on shutting down DeMar's driving lanes and take away the space on screens he needs to get an open look.
It's not rocket science - when your starting lineup is Jose, DeMar, Pietrus, Amir and Ed, who the f@q is going to score, and who does the opponent key on?
Dagger is talking sense. Demar is what he is - he wasn't an all-star before this game, and he's not a complete chump after it. He did have a lot of trouble scoring against TS, especially with perkins and ibaka in the paint. He's a slasher without a great shot, so if you have a good defender sticking to him like glue, and a great paint protector behind your defender, Demar will struggle. Without a reliable post-up player, or a reliable shot creator on the floor, our O stagnates and is fairly easy to stop.
Also, full credit to not only TS, but the OKC bigs too. They were working really well together.