There's no question mouse and keyboard wins over controller every time, all things being equal. A killer player with a pad just doesn't have the same tactile ability. This isn't really debatable and no point in arguing it here... we've seen it time and time again in other shooters. Try hooking up a controller to your PC and play a few rounds of TF2... most pubbers will slaughter you, even average ones. You just can't track as reliably, or turn as easily. Can a good pad player hold his own? Sure, but it's in spite of the controller and overcoming a handicap.

That said, they can very much make up for this just by ramping up auto-aim on controllers a bit. As it is, I can barely tell the difference, to the point of suspecting it isn't actually active yet. Good aim assist is essential to most shooters (they've all got it, even if you don't realize it) on console, especially when mixing with mouse and keyboard players. There'll still be some disparity, but it should be pretty negligible with decent aim assist.

Also might help if you could hold a button or double tap a direction to turn faster on the controller. Non-issue for mouse users, but on a pad the trade-off of turning speed for steadiness is much more apparent than on a mouse. Even still, as long as the aim assist is working properly, this is less of an issue. Just would be nice.

What a load of crap, most of the players that beat me are KB/M users.... this argument will always be the eternal question... better aim over better movement...

*sigh*. No. You just don't know how game development works.