Both sides of this are a bit to the extreme. The truth is somewhere in the middle.
Al J isn't as good as Adam seems to be implying, and he certainly isn't as bad as the others here are implying.
I have no problem with his pass blocking or line calls. It's his run blocking that needs a ton of work.
I think eventually Al J will be replaced (by "eventually" I mean a year or two from now), but he's a second round pick and should be given a chance to succeed. If he can greatly improve his run blocking then we'll be fine.
BUt, as others said, there wasn't anything we could really do. I wanted Bentley probably more then anyone here. Not cuz of the way Al played, but because Bentley is already a great Center, and he's actually younger then Al. But he wanted to play for the Browns and they paid him a lot of money to go there. Mawae, at this point, really wouldn't of been much of an upgrade, if at all. He's like 83 years old.