User blog comment:Megames1/Against the Meta- (Insert X Champion) is UP/OP because (Insert Y Reason)+More/@comment-1314013-20121110222331/@comment-3329234-20121111011215

Actually in Dota2 they replaced some skills(Nix's E used to be something else), balanced them(Sniper's headshot has a 25% chance to proc for all lvls), added new items(Shadow Amulet), change old items(see Force staff and shadow blade).