I voted 7. When evaluating Nintendo, I do my best to set aside the state of the Wii U and create them purely as a first party dev by the same standards as MS and Sony. We had 4 standout first party titles and a a couple pretty good support titles. What dragged them down I think was going for quantity over quality. Last year we had fewer releases on Wii U with 5 major and 1 support but all were quite good. This time we had 4 major and freaking 7 supports but only 2 have been considered competent to good (Fatal Frame and Rainbow Curse), 2 are just very stock additions (Ultra Smash and Mario Party), 2 are just considered poor (Amiibo Festival and Devil's Third), and 1 was just insignificant (Mario and Donkey Kong: Tipping Stars). I think they would have been wiser to have not thrown resources at Tipping Stars, Devil's Third, and Amiibo Festival and instead take all those resources and pour them into Mario Tennis and beef it up to at least a 7.5 level. No one would have missed those three and everyone would have appreciated having a fifth good noteworthy title.
But all that said, if all things were equal this would have been a good year. However, all things are not equal. The reason I don't factor in the Wii U's position is because it's not really a helpful thing to point out cause all it is is a refresher course in what we already learned to varying degrees with the Dreamcast, latter 2/3 of the N64's life, latter 2/3 of the GameCube's life, the latter half of the Wii's life, and the entirety of the Wii U's life: *no* company - not Sony, not MS, not Sega, not Nintendo - can carry a platform alone. So when I evaluate Nintendo, I ask if the Wii U had PS4 levels of third party support, how good of a year would it have been? IMO, very good. Thus 7. Not as good as last year on Nintendo's end, but very good.