Key Board vs. Xbox/ PS controller

[theonedoctor]

Ok i am in an argument over what is a better way to play fast pased Fps like COD and Halo 4. I think that a controller is just better for it on average, but my friend who is so biased and never played on a console believes that a key board and a mouse will BEAT a controller EVERY TIME. So now he challenged me to a competition where we set up a controller on the computer and he plays with a keyboard and mouse. here is the thing though... He picked a game that he has obviously played since he talked about it for a while and now he is pretending that he has never played it. So here is what i am saying I am stuck in an unfair competition and i just wanted to get your guy's opinion about this. Like if you agree with me about how a controller is better or if you disagree or even if you know of another FPS that is not to common and we balanced. Also we cant do COD because he never played it and claims it is a terrible game, or BF3 because of some stupid reason. Alright well lets see what you guys think about all of this. Please pardon my grammer

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oh and the game is Counter strike something