One, I would imagine, considering that the Wii-U is considerably more powerful than either the 360 or the PS3.
Until the Sony/Microsoft release their new console in the future rendering the Wii-U redundant and third party developers abandon it... again, like they more or less did with the Wii.
Nor does a powerful console mean it's only going to take one disk, the main reason Sony has a step up on Microsoft is because of the Blu-ray storage advantage over the DVD. There'd be little between the 360/PS3 if it weren't for that. I somewhat doubt the Wii-U will be using Blu-Ray or any significant storage disk so regardless of how powerful it is, it's going to be hindered. As much as Nintendo hype this thing up, it's still 6/7 years behind the times.
Digital will eventually take over Blu-Ray anyway.
Partly why games like VII or OoT did so well to be honest. In all seriousness though, of course I blame SE rather than consoles for the FF games going down hill since that era. My point was more to illustrate that having better console power relative to competitors doesn't mean better game potential.
I wish I was rich to buy a super pc like that...cause I love MMO's and I love RTS's I love PC GAMES! but alas
That would be nifty indeed..