Obviously GTA will sell more. Is this even a legit question?

The WiiU's audience is mostly all core-gamers of Nintendo brands and then core-gamers with multiconsoles, so it should have the same adoption rate as MK8, so ~40-50%. Then its a question of how will the WiiU grow over time.

you make it sound like GTA5 has this in the bag, with no possibility of losing.

I really don't care which Game will sell more, I only care about that the better Game will release on the Console I own, and that's the the case because I own the Nintendo Wii U ;)

Based on my prediction Smash Bros won't have a chance, but of course in reality there is always a chance for it to happen.

You forgot to say "in my opinion" because Smash > GTA5 is not objective.

Sorry, you are right it's a little tricky how I wrote it ;) Please let me explain it, Smash Bros will release on the Nintendo Wii U and since it's the Console I own everything is fine with me because I am the one who play the better game which is in my opinion Smash Bros and this is the most important thing, and not which game will sell better ;)

Thats what i like to hear ;-D Btw, what is your prediction for both SSB games, im curious

Im pretty sure of that homie!

Given the WiiU install base (which will grow of course because of Smash but still...) I think this is definitely likely. Although the PS4 will be carrying a large part of the GTA5 sales as it has a bundle and the doubled install base.