If you guys watch the valve documentary about the steam controller, they raised some excellent points regarding what makes gaming on a touchscreen worse than a controller..
Its all dependent upon actual feedback you recieve on your fingers, which includes muscle memory that is really really essential for hardcore gaming and an enjoyable experience.
ANyway, im not against mobile gaming.. i too enjoy dem..
PS: Any patapon fans here ?
With TEGRA K1, Now I can play Candy Crush with awesome and HD graphics