It's not about good and bad, it's the difference between a game like WoW and a game I can play on a touchpad. Very different. The lack of horsepower is an obvious issue, but do you know how many keybinds I have in a game like wow? About 30-40. How about the precision of a mouse and keyboard vs a touchscreen? Screen size (lack of)? Some games are just too complex for these sorts of input devices and there's really no benefit to running them on a portable device. I'm not raiding while outside having a smoke.