I predict about a 91%.
It will get the best reviews from the biggest reviewers I think. But smaller reviewers will find room to complain, especially since its such a hyped title.
LEFT4DEAD411.COM
Bet with disolitude: Left4Dead will have a higher Metacritic rating than Project Origin, 3 months after the second game's release. (hasn't been 3 months but it looks like I won :-p )