It could negatively impact Wii U in the short run, sure, but we can observe that Nintendo's basically surrendered any interest in having good sales this quarter to try to bulk up next quarter and beyond, so to use a military analogy, Sony can't kill any soldiers in a position Nintendo's no longer defending anyway
Hype will be on Sony's side; but all the normal launch-day problems will be there for the Orbis once we get down to the holidays: the ever-comparatively-poor launch lineups, price, supply constraints, while Nintendo this holiday will have their "Gears of War" equivalent (which may or may not actually be a graphical beast for Wii U's sntadards, but rather will be the first wave of games that really show what the Wii U's about)
As for Microsoft, like kowenicki said, Microsoft's stronger presence in America will give them a leg up on E3 hype in any circumstance.
Monster Hunter: pissing me off since 2010.
