Seems like docked mode and wii u both have frame drops to 20. It was predicted the Switch would have these issues because memory bandwidth is similar in portable and docked modes so a bit of a bottleneck for docked mode. Switch is primarily a portable with docked mode more a bonus. As also predicted no enhancements between portable and docked, its just a resolution boost with minor output enhancements no actual improvements in detail or any game engine enhancements as was expected so it can flick between docked and portable modes rapidly without issue.
I suspect Zelda is also using the performance mode which pegs the gpu at 200 gflops not 150 gflops hence the low battery runtime. In fact they may have had to introduce this enhanced performance setting because of Zelda issues.
Hopefully a lesson learned and future Switch games won't try to push resolution to 900p but instead settle on a 720p resolution with anti-aliasing unless its a game well within the capability of the hardware and can do 900p or 1080p comfortably.
So basically docked Switch and wii u is pretty much a similar experience if you have a Switch pro controller but the best experience is in portable mode technically but I'd rather play on my 50" tv using virtual 3D mode to be honest.
I suspect the best experience technically may actually be emulated on pc using a 4k native resolution for the wii u version. Which I hope to do at some point.
