No. It's a measure of how many people don't know how to stop said champion. --- GT: Infinity Havoc ~ BlazBlue: Lambda/V13 ~ SSFIVAE: Dudley ~ UMvC3: Tron/Frank/Sent ~ LoL: Namanie Nienami -Contradictory Conjunction User-
For example Rumble and Taric are really strong and it shows in their win rates.
However it wasn't too long ago that Syndra was basically the worst, and now a lot of people are realizing her power. Same with Elise and Vi before they found their niches.
Shen and Olaf were often kings of tourneys, but their win rates plummeted with people trying to play them in ranked without actually knowing how to play them. Similar story with Rengar at some points of his buffs/nerfs.
So generally yes, high win rates are signs of a good/easy champ. But it's important to recognize that a low win rate does not necessarily equate to a bad champ. --- http://i.imgur.com/ZhLrT.jpg http://i.imgur.com/H6Frl.jpg