Nintendo franchise sell better but they do not cover as many gaming genres.
Aside from the titles with Wii in their names Nintendo has failed to develop new IP this gen too, they made nice improvement on old recipes but have failed to come up with new ones...( and the issue with the Wii games is aside from the Nintendo name on the box they are not really IP you can copyright which has led to a drove of copies ( heck even Move Sport Champions and Kinect adventures are just copies).)
Sony lost many third party exclusives but did a very nice job developing successfull new IPs covering a wide range of genres ( Uncharted, LBP, Heavy Rain, ResistanceFoM to name a few).
Microsoft has a few IPs that are very successfull, the issue is that they cater mostly to the same crowd.( and CoD success has made it so that the fact that Sony not having a big FPS isn't that much an issue).
Endless Ocean series, Nintendogs series, Big Brain Academy series, Wii Music, Wii play series, Wii Sports series, Animal Crossing (1 gen old...), Super Mario Sluggers, Picto Chat, Picross, Art Academy, Trace Memory, Battalion Wars (1 gen old), Steel Driver, Wii Party and these I googled: Band Brothers, Rythm Heaven, Jet Impulse (wth?), Pandora's Tower, Xenoblade, Last Story, Eternal Darkness, Polarium, Professor Layton, and the best game of them all: http://youtu.be/j95UJEWGbhQ.
For the one gen old games, it fits your equivalents of God of War, killzone, SOCOM and others from the PS2 era.
Add to the fact that they completely reinvented Mario with the Galaxy series. They rebooted Mario with NSBWii and Donkey Kong with DKCR. The offered Zelda as a return to the OOT roots (which differed from Wind Waker), so the only game like it was OOT. They also reinvented Wario games with Wario Ware.
Compare that to 3 Uncharteds, 2 Killzones, 3 God of Wars PSP version, which are mostly on the same engine with very similar graphics. For Uncharted, I would never say they're bad games and I have yet to enjoy them personally, but the "Reusing the franchises" argument is horribly biased.