I'm of two minds when it comes to the news of this release:
On the one hand...
...Hey, now I can finally play the full Mass Effect series on the platform I actually most enjoy playing games on (PS3)!
*ahem* (but yeah, I'll be getting the PS3 version)
...EA really has no business releasing ME3 on Wii U. I've said it before, but it's the end of the trilogy. It's a game that's worthless played on its own. If they were going to do a Trilogy release for PS3, they should have just held the Wii U version of ME3 for that. It's the only way people should play that series. Future Wii U owners are right to be angry at this announcement.
On the other hand...
...EA put more of a genuine effort into making good (or at-least-decent) quality games on Wii than most 3rd parties did IIRC. I worked at EA during the Wii years, and I think I helped make a pretty good Tiger Woods game in Tiger 12: the Masters. The people I worked with may not have been regular Wii players, but we all wanted to make a good game that really did the Wii justice and I think we succeeded. Personally, I think we put out the superior version of that game, considering some of the features the Wii version had that the PS3/360 versions didn't.
And it wasn't just the Tiger games. There were Boom Blox, Dead Space Ignition, and from what I understand were pretty decent versions of Madden as well. I can understand if those didn't appeal to you, but they weren't bad games and apparently none of them sold well. EA got burned badly by the Wii, so if that rumored EA partnership with Nintendo for online did go down badly, I can totally understand why they're only putting a token effort out now. Nintendo gamers have not had a good track record of buying their games, so why should they give a **** about them now for Wii U? I think they should, but I can understand why they don't. What possible reason should they have to believe that the Wii U will be any better to them than the Wii was?
As for Mass Effects 1 and 2, they probably look at those right now as not worth the effort on Wii U. The Wii U version of ME3 is done by now. Maybe they can't justify that cost and time for making Wii U versions of ME1 and 2 right now with more useless Wii U Gamepad functionality shoved-in, whereas it's a pretty simple porting job from the 360 to PS3 (and the 360 version probably required very little work to just shove the DLC on, considering all 3 games already released on that platform).
Honestly, this isn't the game I would get upset about in terms of future support. EA's just trying to capitalize on a game sinking in relevance with every passing day. ME3 was a worthless game on Wii U from the moment EA announced it. I'd keep an eye on what they announce with Dead Space 3 and Dragon Age 3 in regards to Wii U. That'll be the real test.