Fishy, you know me, I've been here for a while. I'm no 360 fan.
Look at who owns 360's.
Look what games are on 360.
Now look at the U.S. attach rate.
Now look at the Wii's
and take out 1.2-1.4 for WiiSports and WiiPlay or don't (either way my point is still valid).
Is that really just from being out a year earlier?
(Edit: 360 will never out sell the Wii for a whole year.)
I would cite regulation, but I know you will simply ignore it.