JO's defense is excellent though.
It wasn't last night. Gasol had 25 and 14 and Bynum 16 and 17.
His defense is fine, and he's not "cooked." Do you know how good Bynum and Gasol are? Their length and Gasol's passing gives them twice as many easy baskets than any other team in the league.
KG helps Ray on the pick and roll which gives Gasol good positioning and single coverage. Then JO helps on Gasol, and Bynum gets position on our entire team under the rim, opening up the alley oop, the tip in, or endless offensive boards (while Gasol crashes with him every time).
It's not like JO was just choosing to be lazy and not box out, Bynum was getting the position almost every possession because JO and KG were doing their jobs on Kobe and Gasol. It's easy to say just put a body on him afterwards, but when you're facing a guy with significant strength, speed, leaping, and length advantages, he's going to pin you under the rim and grab the rebound over the top of a guy 10 years older than him every time.
Now would a really good rebounder help our team full of average rebounders...obviously. In order to get that though, you have to take an unimaginable hit to the defense. Same if you want a better shooter/finisher.
JO makes us a very tough defensive team, and I thoroughly disagree that defense was the problem last night. It was an 88-87 OT game. We absolutely shut the Lakers offense down in the last 10 minutes and forced them into a ton of misses. Most of their baskets were a result good rebounding. We lost because the Celtics couldn't run their offense to save their lives.