That's not actually that smart.... because then the other team can't play him either. Waste of a ban.
Honestly though I think he's an amazing champ. But he has a low winrate half because he has a high skillcap and people don't understand how to play him yet, and people don't use his ult correctly, and also because people don't understand how to play around him well, either.
The Most Broken Melee Champ