Wow well I certainly did not expect Reach to be on 92 and looks like it'll stay like that after 60 reviews. From what I've been reading and watching, Reach is definitely the best Halo.
I personally don't think it's a matter of 'standards have changed since 2007'. Sure standards have changed since 2007 and that why 2010 games like Mass Effect 2, God of War III, Super Mario Galaxy 2, Red Dead Redemption, etc are real standouts. But the thing is if Bungie didn't put much effort into Reach and was just another 3/ODST like game, and let's say it's been scoring 90 on Metacritic, then the reason for that would be because standards have changed since 2007, meaning a reviewer would say 'yeah it's a Halo game but it's like 2010 now and we feel like we're playing Halo 3 again'. That's when you say standards have changed. And a clear example of this is Crackdown 2. In 2007 Crackdown released and now it's sitting on a 83 on Meta. Fast forward to 2010 and Crackdown 2 is a flop in both sales and reviews. It's on a 70 on Meta and the criticisim is consistent amongst the reliable reviewers. It's pretty much plays like Crackdown 1 without any major improvements. This is where you'd say standards have changed.
But that shouldn't apply to Reach. It improves over Halo 3 in all ways and I'm sure Reach players right now know this is true. (Though seeing how quite a number of reviewers have said that the Reach Campaign is a bit weak, it's up to debate whether it's an improvement over 3 since I haven't played both.) Campaign aside, Multiplayer is intense. The Customization is what I personally love about Reach. I saw the videos and wow it's so awesome. I'm a fan of character customizations and that's why I'm also pleased that in COD Black Ops you'll at least be able to customize your character to a certain extent. Nevermind that and back to topic.
I hope people see what I'm trying to say here. I just personally don't understand why it's below Halo 3 and is sitting on a 92. Like how I predicted a solid 95, that's not gonna happen and I personally did not think that it would recieve so many 8's.