Any port they developed cost that much. 

ZombiU is an original game developed from scratch.  It would've cost more.

@bold: can I have a source for this information? 

http://www.gamesindustry.biz/articles/2012-07-23-ubisoft-says-wii-u-ports-costing-under-USD1-3-million

(Sorry for hijacking the reply)

$1.2 million for a Wii-U port, more for an original title, but not as much as they'd spend on something like Assassin's Creed or Ghost Recon.

haha gotcha...I guess he was confused. If they can make a big game under 1mil that's some voodoo magic they are using lol but yea definitely not as much as AC. Not sure about ghost recon though

http://www.gamesindustry.biz/articles/2012-07-23-ubisoft-says-wii-u-ports-costing-under-USD1-3-million

Though they said that in July, so might not have finished/optimized all games yet.

I fully believe this is true for something like Just Dance 4 and Marvel Avengers: Battle For Earth. But Assassin's Creed III ? I doubt it.

Neither Rayman Legends nor ZombiU look like big budget games to me.

The Ghost Recon games are surely more expensive.

Well AC3 Wiiu had some issues compared to other versions right? maybe they didn't spend enough money on it that it deserved :S 

i liked the demo for rayman legends but i honestly couldn't get into rayman origins for the life of me played the first couple stages then the game has been collecting dust ever since..i heard it got better later but platformers are one genre where it should definitely capture you from the get go which this game failed miserably to do..then to hear folks saying it is the best 2d platformer in years much less this gen i was like wtf?!

If Origins was successful enough to allow a sequel to be developed despite its modest sales over multiple platforms, then I can't imagine them needing spectacular sales levels with Legends.

That is of course ignoring the possibility that a third party has an engine to use (and pay for) and just carries on making games thanks to the sunk cost idea, but that rarely ever happens...

The Legends creator said weeks ago that a PS360 version would only be possible with dumbed down graphics, he not ruled out a port but said that nobody working on it.

I don't think that Ubisoft expect more than 400.000 to 500.000 sales for Rayman on Wii U.