A fantastic game 1

Mass Effect 3 is a fantastic game. If you not know and are interested in the big shoot solo / OR cooperative multiplayer shoot the arduous OR / AND RPG / OR beautiful epic stories, consistent, poignant ... AND / OR SF, go for it!
I'm a big fan of this game and have it on Xbox (with some DLC ...) and Wii U.
The differences between the Wii U version of the Xbox Version:
Wii U, a comic lets you know the gist of the story of Mass Effect 1 and 2 ... and go directly to ME3 (the best of the trilogy) without going through ME1 and 2. While ME2 is still played today without displeasure, ME1 is a game rather winded and only the story is good. The BD can quickly know the ME1 and ME2 stories and do (and again) quickly the different choice of two previous ...
The game pad does not bring much to me for the solo. Play the game pad is rather less than the xbox controller. Both defects on a gamepad xbox controller are relatively cumbersome and autonomy. There is a dlc (rather dispensable imho ...) included in the special edition wii u.
The big plus of this Wii U version is the free multiplayer on Wii U. In addition, the Wii U game pad makes it easy to communicate with partners ... and easily put a helmet for night games.
03/2015 EDIT: After practicing a few hours on the multi (fee required) of mass effect 3 Xbox360, it is ultimately richer than on Xbox WiiU. Indeed, on Xbox, there are additional characters absent from multi Wii U (volus, juggernaut geth, awake protean ...), additional cards safe (acid rain, threatening clouds, ...) and an enemy faction more: harvesters. There are also challenges that encourage to continue the multiplayer experience ... more than just points on the N7 multi Wii U. In short, ME3 Multiplayer is even better on Xbox 360 (but paid).