Seems like mixed reviews on this one, alot of people love it, and alot of people hate it or don't like it that much.. which is why I stay away from reviews now, except for G.I.'s, which are usually pretty good / accurate, I've also noticed GameTrailers reviews are also usually well-rounded as-well, but most reviews just suck now-a-days.
I learned that with the whole Kane & Lynch fiasco, amazing game, that got crapped on - same with Jericho, which got HORRIBLE reviews, but it's actually a great game.. but no one will give it a chance, because everyone listens to reviews instead of actually trying things themselves.
As for Ao2, I've had it in my GameFly Q for the past 6 months or more (whenever they added it), and deleted everything else from my Q to make sure I get a copy, and if it's any good, then it'll be an instant-buy for me, if not, then it'll be a long rental.