I agree its stupid to talk about who's the "fastest of the Fast" at this level of competition, for as many reasons as have already been named. Like it has been mentioned, you just can't quantify it in any way that is even remotely relavent for assigning an advantage. The best teams come to their status at much more than physical attributes alone, so thats really what this debate is about.
The speed in this game, in a sense, works against itself and cancels out its direct influence into the game, since both teams have it, and instead merely reduces the margin of reaction time alloted for player X to get from piont A to point B. And thats what this game comes down to as it relates to speed: Reaction time. This is coaching, practice, repetition, recognization, all the things that go into a making a team go from "talented and good" to "polished, well-organized, great."
.3 seconds is an eternity in the 40 yard dash, however, it pales in comparison to the time gap that is placed between a defender and his assignment when he hesitates to get in position or misreads a play call and is forced to catch up. Often times, even the fastest guys, can't do it, and that shows you the significance of the Nature/Nurture aspect of this game. Who can blend their natural talent best with their well-nurtured coaching to the an optimal level in a game such as this one. The one that does it best will probably be the winner. It should be an interesting battle. Luckily, we have a lot of experience coming back in the right places to help balance out the lack thereof in others, and thats encouraging for any Horns fan in a game as such as this where experience and reactions will play as big a role as talent itself.