I think that the Wonderful 101's release date pretty much confirms that GTA5 won't be seen on WiiU, or at least not at the same time.

[osed125]

Even if GTA V comes to the Wii U the sales won't be that much of an issue for W101. 

Both games target a completely different audience, the people that will get W101 were probably not going to get GTA V (at least not at launch) and vice versa. So in the end this won't change anything imo.