Nintendo's WiiU exclusives do tend to run at a solid 60fps at 1080p.
However, in large part that's because of the art design. The models and textures used are simply easier for the hardware to handle.
When you throw something like Bayonetta at it, the WiiU starts to chug in spots.
You can see that at work in other situations, too. World of Warcraft kept its models simple for a long time to keep performance up. But because the models and textures they used suited their art direction, it wasn't glaringly obvious.
(Some older MMOs still give my rig fits, and I pull 80+ FPS in Shadow of Mordor with all the options all the way up. Go to Bree in Lord of the Rings Online? Frames tank. Way too much reflection!)