The truth is, we don't know the facts of the shaders; therefore all we can do is speculate. All we know is that Wii U's GPU is definitely more powerful then either Xenos or RSX, and that's been stated numerous times by developers. How many more times is up in the air. While GFLOPS will give us an idea, we still need to know how everything works togethter. The eDRAM in the GPU is a much better solution for Wii U than the eDRAM was in the 360 because it's built on the same die, the 360 eDRAM lost its intended use rather quickly due to not having enough, as Shin'en states, and it has more than 3 times the amount. We know that it has OpenGL 4.X features, aka, "several generations ahead of PS360", so that will also help increase graphical potential.

By the way, some googling suggested that Xenos has 216 GFLOPS theoretical max. 

Oh OK, yeah maybe you should have quoted him, I'm glad you and I are mostly in agreement! :)

Well, technically Wii should have been easy to max out quickly considering how it was an enhanced Gamecube. I don't think Wii U will max out in graphics anytime soon since it's a completely different architecture than either Wii or PS360, so we'll need to wait a few years after the devs get a hang of it. Plus, I don't think many developers have been using features newer than PS360 GPU features all that much, so there's that which we can expect (if they don't intentionally ignore those features)

I like to call him Samuraisword

this si roughly how I would place them all. PC 10 will increase quick though.

You say eDRAM vs eSRAM?

eSRAM is faster but expensive compared with eDRAM.

Yeah. All devs who worked on Wii U so far are lazy. It has nothing to do with how complicated or underpowered the Wii U is. Nothing at all.

Moderated,

-Mr Khan

Precisely. the word of a dev who proved itself with actions is worth more than those that came with excuses.

I don't think "lazy" is the best term to use here, because Nintendo is also partly at fault for developers not being able to fully take advantage of Wii U. Recall numerous reports of development kits holding "locked" content, and development tools being very bad to work with, not to mention the lack of support from Nintendo themselves available before launch. Even with the launch dev kits, I think it's been hinted that even the "final" SKUs had some locked content, so Nintendo seems to be a bit iffy on what they want developers to use. Developers have not had enough time with the better SKUs for games since they have not been supporting the console as of late, so we may need to wait and see what will happen later on and see what the better SKUs can do for future games when support picks up again. But some of it could be attributed to developers as well, because some have (even after the final SKUs) not even contacted support from Nintendo for any possible aid (like Criterion did back earlier this year). It's definitely due to the lack of hardware sales that developers don't even feel like trying. Some of them are somewhat happy though, I mean we're getting games like Assassin's Creed IV and Arkham Origins, (both predecessors sold not too bad on Wii U with roughly 150K+, about 4.5-ish percent of all Wii U owners, where PS360 versions were like 5 ish). 

By avoiding a pipeline with many NOP Instructions a system that has less FLOPs can outperform another just by being more efficient. tThe Wii U's may be an interesting sample of this scenario.

Modern computers usually have their potential limited when their CPU and GPU pipelines become filled with NOP instructions (which commonly happens because they are waiting for the RAM memory to send data to them). Wii U's eDRAM plays a important role to avoid this scenario because it is not relatively fast but its latency is relatively low as well.

And about what Shin'en said, while it is nice to see a developer giving a details about the system, all the thinks at the interview were already known (if you understant a bit of how computers work and games are made).

Even with the Wii, though, just about all its most advanced games came out in its 3rd, 4th, and 5th years.

Well I did say "should" have been easy to max out due to the similar architecture to Gamecube, but considering how some developers looked at the system, it  wasn't surprising that we didn't see too many advanced-ish looking Wii games until later (aside from Nintendo's own games).