"No game is? I don't think thats a reasonable statement to make."
It's very reasonable. Someone gives a game 95+ rating it means one of two things: a) their rating scale is just plain off or

they're reviewing it as a fanboy. It doesn't enccessarily mean they are mindless but it means they are seeing things through rose coloured glasses.
Heck, it's nto an insult, as I've been guilty of it in the past as well overrating games when they first come out and then see things a lot more clearer as time goes by. Not so bad now but when I was younger every game I liked was a '10'. L0LZ
"While I would agree that there probably aren't any 'perfect' games, there are many that deliver experiences superior to almost anything else in that genre."
Like I said, your ratings cale is fof b/c you are basing a game's quality on comparison. I could live with that if that's made clear. But, i'd rather based a game's rating on pure quality inofitself.
It's like me claiming DA2 is a 10 because no matter what it has, it has to be way better than POR2, right? See, that's why 'rating on a scale' is a iffy proposition.
"I'd probably give DA:O 7-8 or so, and DA2 5.5-6"
I 'officially' give DA2 an 8.7; but I think a 7.5-9 rating for both DAs is reasonable.
Of course, if youa re going by a hardcore 0= no redeeming quality what soeevr, 10 = perfect, and 5 = right in the middle, average game and you find DA2 an average game is 5.
Problem is, you are fighting a losing battle, because when people read 5, they assume the game is beyond crap. heck, DA2 has a rating of 8ish yet people take that as a sign of 'pure crap'. that's right 8/10 is equated with crappy game. L0LZ
And, this brings up another point on why metacritic can be considered a failure b/c every reviewer gives ratings on a different scale. Two people can give the same game 10/10 but for two different reasons. One gives it because they honestly beleive (even if I disagree) the game is perfect while the other gives 10/10 because they believe it's the best of the best.
Sucky way tom compare things sicne the value ratings is different. Plus reviewing games on a 1-10 scale is vastly different than rating games on a 5-10 scale sicne very few games ever get below 5, and most get 6-8.