I'll bite XD.

If there's any "new" tech in the Wii U, it's not going to get utilized.  Why?  Because the PS4 and Xbox One are barely capable of handling them (Assassin's Creed Unity is running at 30fps, for instance).  So even if said new tech is in the Wii U (Which I believe is), it literally can't handle it.  Which brings in the old tech.  Said old tech has had 8 years of optimizations, no one is going to be able to get much more out of it.  Plus whatever extra GPU power is in the Wii U has to be used to make up for the weak CPU, much like how Cell had to make up for the RSX.  This didn't leave much left over for devs to work with, which is partly why 360 MP titles ran that little bit better.  This is also why third party devs had trouble bringing their engines over to the Wii U.  Even building engines from the ground up is going to bring you back to square one for the power problem.  The extra ram will help with better textures, but even then the ram in the Wii U is actually slower than what's in the PS3 and 360.  

Looking at it a bit more top down(My opinions of course); Nintendo engineers went in with the goal of taking last gen tech and try to make it cheaper to manufacture.  Every advantage in the Wii U is negated with foolishness.  They negate the extra GPU power by making a cheap CPU.  They negate the extra ram, by cutting the bandwidth.  What boggles my mind even more, is that Nintendo could easily have taken a good off the shelf APU, couple it with 2 gigs of GDDR5 ram and you would have been left with a pretty powerful machine for a solid price.  They'd also still have BC via software emulation if they wanted to hire a team to make one.

I ran on a tangent, but to give you a concrete answer: the Wii U was designed to handle last gen tech at a cheap cost.  Last gen tech has had 8 years of optimizations and can't get better (much).  Therefore you're not going to see much better on the Wii U because it is technically not capable of producing more.

No way. WiiU is powerful enough to handle all the games this gen. Sure its competitors are more powerful but it does not mean that WiiU is weak.

Of course WiiU has not been touched to its max power.

I believe these two looks miles better than MK8 or Smash. Of course, these games won't look as good as the games with best graphics on XOne/Ps4, but looks pretty to me:

Journalist has reached the limits of audacity.

The 8 years of optimization didn't go into Wii U's hardware though, it went into the PS3 and 360 hardware, which are very different from Wii U. There has been little effort invested into optimizing to get the most out of Wii U's specific hardware.

Games like Trine 2 Director's Cut were able to push graphics that are by the admission of the devs beyond PS3/360 capacity. As well as being several (GPU) generations ahead of the PS3/360, Wii U's GPU also has DX10-11 features.

The lower RAM bandwidth is compensated for by having 32MB of high speed eDRAM to handle data that needs rapid access. This is more than 3 times as much eDRAM as the 360 had, and the PS3 had none at all.

Just this past month we saw the release of Art of Balance, which technically outdoes any previously released game on Wii U, and the same studio is looking to push the system even further with their next game.

cause its already about a generation behind...

but seriously nothing Ninty put out has pushed the console. Going to have to wait on Zelda for that as usual

Wii was a generation behind graphically but its most technically advanced games arrived in its 3rd, 4th, and 5th years. 

I agree though that nothing Nintendo has released has pushed the envelope technically.

Oh definitely; Wii was 1.5-2 times more powerful than the Gamecube, Wii to Wii U is a VASTLY bigger jump.

The guy has a point though! I was seeing some Next gen screenshots on neogaf today and realized that Mario kart 8,Hyrule warriors and Bayonetta 2 suffers from huge aliasing problems and some flat/low res textures here and there.The Cartoonish/cellshading look kind of helps hide the latter,but the aliasing is pretty obvious.

I believe nintendo can push the IQ a little more in their games(specially if they lock the game at 30fps) but i don't think we will see an uncharted->uncharted 3 kind of jump.

UC1-UC3, maybge not, that would require a massive investment that no Wii U dev will likely commit.

A Killzone 2 to Killzone 3 level of improvement from here on out though is very likely to happen as devs gain experience with the hardware.