[Update: Currently the WiiMote App cannot connect to devices running Android 4.2 but the developer is looking into a fix.]
My biggest gripe with trying to play console quality games on a mobile device has to do with on-screen controls. No matter how accustomed to them I become, they just don’t offer the same precision and/or experience as do physical controllers. I find playing FPS games with on-screen controls to be close to unbearable. Maybe I’m just old school, but give me a controller over onscreen controls any day.