Wow really? You are seriously not giving WoW's pvp system enough credit. I had to buy a new mouse to keep up with the keybinds I needed in pvp. If you wanted to play your class well in arena in WoW, you needed easily over 30 keybinds. Quit lying.
You know you bring up a good point here though. In WoW the only real competitive pvp was in arena. Battlegrounds were not competitive (well only maybe rated battlegrounds, but I still think they were ****). Open world pvp was also not competitive because gear level was always an issue. In Arena though, gear was very seldom an issue when considering skill...