There's absolutely no doubt that for certain types of gaming (First Person Shooters for instance) mouse and keyboard is far superior to a dual stick game controller (I think there's actually been more than one study on this). That said, we have yet to see what competitive gaming will look like with a multi-touch pad (ahem, Apple) and keyboard. With Valve now providing cross platform support for their games through Steam, we're likely to start seeing just what that looks like in the not too distant future . . . should be interesting.