O'Quinn is a really (really) poor man's Demarcus Cousins.
If he could stay out of foul trouble, he is a rich man's Sullinger.
6'10'' and a solid 250 pounds. Almost a 7'5'' wingspan.
He averages 16 points, 13 rebounds, and 4 assists per 40 minutes.
He is a good shooter. From 15-19 ft, he averages 44%. Last year, he showed even more range, shooting 44% from 20-24ft. I think he could be a three point shooter with more work. He averages 21% for his career.
He has a variety of post moves, drop steps, and runners to score around the bucket.
His defense at the rim this year is a respectable 50%, and was 49% last year. He is a decent rim protector. But he also gets steals and blocks at a good rate for his playing time.
Again, the biggest problem with his development has been foul trouble. He averages 7.5 fouls per 48 minutes. This is still better than players like Nene, Dedmon, Ajinca, Zeller, and Payne, but it is a problem.
He is 25 years old and is on a 4 year, approximately 4 million dollars a year contract.
He seems to be to be a prime example of a Paul Milsap, Demarre Carroll, Jae Crowder-type player who could take a huge leap with improvements (for him, improvements in fouling).
O'Quinn is a gritty competitor too. He would fit right in with Smart and Crowder as a tough-nosed, unselfish, skilled player.
I would love to see O'Quinn in a Celtics uniform. I wonder if the Knicks would consider Turner plus the Sixers 2nd round pick for O'Quinn. In fact, I'd probably be willing to offer the Dallas Pick for him.
Edit: His per 40 stats are stats I've been watching for a few years, including his time in Orlando. He has put up these per 40 stats consistently over that time period.