Anyway, the REASON for the post was to say that if all the players are using the same control medium its going to be competitive because they want to win just as much as the people the mouse and keyboard. But, judging by you grammar I think I'm correct in assuming that you are still in your tweens and I have wasted my time in replying to this non-sense.
I assure that I have been a gamer longer than you have been alive.
First of all, anyone that has the sentence "Do you think that PC version of this game will more buttons or different actions than the console port?" in their post shouldn't be complaining about grammar. Secondly, I see no reason make a personal attack due to a difference in opinions. His age has nothing to do with the validity of either of your arguments, nor does your experience as a gamer.
To me it just seems like he was giving an extreme example where your argument falls apart, and I would say that his scenario of 'one button vs a whole keyboard' definitely disproves the simple argument that "controls have no impact on how competitive a game is." The fact that you missed such a common debate tactic (take your opponents argument to an obvious extreme and see if it holds water) shows to me that maybe you aren't as smart as you seem to think.
From experience, I would also agree that the PC is more competitive than consoles, and saying its due to controls seems like a good guess. To me, the mouse equalizes the playing field much better than anolog sticks. With the mouse, minute adjustments are easily possible, which means that the results of a shootout are a more accurate reflection of skill as a gamer, rather than skill with a controller. anolog sticks are inherently inaccurate - they have a deadzone in the middle, requiring you to move a measurable distance to make any input at all; don't always zero out properly, so you can be exactly sure where the center point you're pushing away from is; then add in the fact that eye-hand coordination is much easier than eye-thumb and it becomes obvious that the mouse is much more natural.
There are more sponsored gaming tournaments done for the PC than consoles, which should say something at the very least.