Lol at some posts here. The comparison was very simple - developer A has a Wii U game 1 released last 2012. Did developer A did a great job in using Wii U hardware to increase graphics on the games he have done after 2 years. So that is the comparison. It may or may not be the an increment of the same game i.e. mario 2 and then mario 3.
since it is the first hd console for nintendo, from wii. Absolutely yes. In terms of Wii U 2012 games comparing to 2014/15 games. Some developers might tried to push further. hard to compare HD games since it is way graphically great nowadays. Pushing Wii U on the graphical side we may need to wait for an open world RPG. XCX and Zelda to see further. Even Devil's Third would be a good choice to compare.
Lets not talk about XCX human models as Xeno games really gave that different human style.
