Incgamers has an interesting point, however-- Chinese players, getting BC so late, supposedly had the benefit of all the nerfs and tweaks that Blizzard added to all the encounters since it first was released here. From Vashj's bugginess to the attunement removal, it could be argued (I'll leave this one up to you guys) that China is playing a much easier Outland endgame.
At any rate, downing Illidan is always an achievement, no matter what game you're playing. Grats to The Seven in China-- now here's hoping they go back and actually try enjoying that raid content!
[ via MMO Champion ]