I will make it clear. Diablo 3 is not a bad game. But deserving a 9 out of 10? Certainly not.
For hardcore Diablo fans, - i speak not for them all, of course - but D3 is more of a 7, 7.5.
It is a very good game in some aspects, but in some others : caracters, skill points, attributes being dropped off to a wow system, length, and inexistance of scary elements... d3 is not doing very good.
D3 seems to be now some sort of wow hybrid.
Do reviewers works for Blizzard, did they really played DI and II?