Huh. Do people really think Wii U ports costs only as much as Vita ones? Wii U is an HD console, its development costs are WAAAY higher than Vita, 3DS or any other handheld. Hence much more risker.
Plus, hardly any of the ports sell well on Wii U, that is a fact. Ubisoft said that, EA said that and the list goes on.
http://www.gamasutra.com/view/news/196509/With_EA_money_talks_or_Understanding_where_EA_makes_its_money.php
Wii U ports don't make money, Vita ports do. Case in point, FIFA 14 is available on Vita, no Wii U.
Add to that, NO publisher has come out and said Vita ports or original games have been unprofitable/unsuccessful. Infact, quite the contrary has been stated by Ubisoft (on ACL sales, a Vita exclusive) and MAnY MANY Japanese companies (MAQL, Kadokawa etc.).
Wii U on the other hand has been openly bashed for not being a profitable and sustainable platform, even by long time Nintendo supporters like UBi.
On topic, GE2, despite with better graphics and better controls (well duh, OLED and dual sticks) will not even come close to MH4 sales. MH4 is 3ds exclusive not because of install base (which certain Nintendo fans will lead you to believe), its because Nintendo paid for it. Remember, the deal was announced in Nintendo financial brief in 2011 before Vita even launched, and before 3DS became a sales jaggernaut.







