Will Wii U pull MS/Sony to early launch or push to a late launch...

[sergiodaly]

In rumors all people speak like the dates for launch are already set in stone for the MS and Sony next home consoles.
I on the other hand, feel like the Wii U still might have a saying in terms of what the others might do, launch time wise.
E3 is the place to announce this things and it is in early June, 6 months and a few days from today.
I believe MS and Sony can still evaluate this 6 months of sales to make a better decision about a more beneficial launch window.
The reception of Wii U its still very "green" and its hard to see if the hype will translate into actual sales.
What do you guys think will be the lower Wii U sales number (by end of May) that makes them ("call" each other and) definitively push to a later date and having more time to create a better machine; and what is the "enough" Wii U sales number (also by end of May) that will make them "jump the gun" (that is a over statement, since, IMO, Nintendo were the ones that really "jump the gun") and bring the next home console early, to fight Wii U in the 2013 holidays?

My guess for low is 2.5M... if sells that or lower MS/Sony might delay the announcement (not in 2013 E3), and push the launch to 2014.
Enough is 6M... that number will put lots of pressure in MS/Sony to release in 2013.

in between... MS/Sony will carry away with normal business and launch at their own pace with little regard to what Wii U sale numbers are...

whats your guess for end of May Wii U sale number?