Clearly the E3 thing didn't do it justice. When I look at both of these videos, the Wii U one looks far superior to that of Assault, 64 3d, and the original. The only comparison in here that isn't made would be Star Fox Adventures (which, opinions aside from the majority of haters, had the best visuals of the series and arguably some of the best visuals on gamecube in general).
http://mynintendonews.com/2015/06/19/heres-a-comparison-video-between-star-fox-zero-and-star-fox-64-ds/
Here’s A Comparison Video Between Star Fox Zero And Star Fox 64 3DS
One of the titles that Wii U owners are looking forward to playing later this year is Star Fox Zero, which is being developed by the acclaimed Platinum Games. YouTuber Tilmen has set about creating a comparison video comparing Star Fox 64 3D for the Nintendo 3DS and the recently unveiled Star Fox Zero for Wii U. If one video isn’t enough you may also want to check out the other video below. Remember folks that Star Fox Zero is an unfinished product and we have no idea how new or old the E3 2015 build of the game is.
Thanks, Lord Zedd