Andrespetmonkey on 02 June 2012
It's inevitable that Durango is the easiest to develop for, it's being made by a company that has specialized in developing software on PCs for decades. Also, DX11.
Sony can try their hardest, and from what I've heard about developing for PSV, making games for Orbis won't be anywhere near as hard as conquering th3 c3ll was.
As for the Wii U? I'm sure the hardware itself isn't terribly difficult to program for, it's just as others have said, making games that take advantage of the tablet controller is probably a little difficult and time consuming.
