True, but then irrespective of the device, the android based games are still in their primitive stage. You can pick any game and compare it to their console/pc equivalent. For e.g., Injustice: Gods Among Us pc v/s android-iOS version or GTA Vice City PC v/s android version. The graphics, the gameplay, the controls of pc versions surpass those on android.
Dude, you can use a controller with android. Do you know about the Ouya console? It is a pure android console complete with controller and you can play all your android games with it.