It's kinda like those who'd rather have Ariza over Artest. Yeah, Artest is better, but Ariza was a role player for that team. I could see someone making the argument that they'd rather have Rondo IN BOSTON, but in general, there's no contest, it's CP3 all the way.
However, as far as Bynum goes, he's not a dynamic scorer, he doesn't have much offensive versatility, and the amount of boards says that Bosh is at least solid defensively.
Yes, I know boards are something that you get on the offensive side, but 10 rebounds per game means that you're boxing out.
Bosh is going to give you 20-10 on most nights, because he's consistent. Bynum will miss a lot of games, and that's probably why the Lakers are willing to part with him.
Sorry, I'll take 23-10 and a good 70 starts per year over 13-9 over about 40-50 starts per year eight days a week. I don't care what the minimal range on offense, or his supposed lack of defense says.