I expect all 3 consoles to be relatively close to each other sales wise (X3 & PS4 within 3-4 Mill of each other when the gen ends) and the WiiU slightly lower than these two.
(Microsoft taking N.A again, and Sony taking Europe again, so these two will annul each other out quite a bit)
So yeah, MS can afford to launch last, but then again if Sony launches last it shouldn't cause them too much harm either*.
*If they have a better launch plan than what was shown by the PS3.
"My point is Xbox is not such a powerful brand.":
You're just plain wrong there, like I previously stated, N.A and Europe basically annul each other out for X360 and PS3, so one country (Japan) favouring PS3 does not mean Xbox isn't a "powerful" brand, cause if we look at it like that, neither is PS3 because it's a ton behind in countries favouring X360. (Somehow language spoken in a country is now a measurement of brand success?!)







