The PS2 games posted all had way less going on, be it no enemy variaton, no environmental factors to speak of, etc.

None of these games have a lot of variation on enemies. You upgrade the CPU and just improve one or two things. I'm not saying that the Wii U CPU is weaker than the Wii CPU. It is substantially stronger: higher clock, way more cache (and surelly better branch prediction), modern architecture. If someone says the opposite, they just need to take some classes about computer architecture.

My problem is just the proof. The game doesn't show anything particularly demanding and even if it did, it isn't a good comparison because we can always have good and bad versions. I could in a similar way create a thread titles "Disney Infinity 2.0 shows the Wii U GPU is that weak" because the game runs on a lower resolution than PS360. But I know it's just a crappy version because when I look at the GPU specs, it's clearly way, way stronger. That's what matters.

All i know is that it's been said that the game got really laggy when coop.

well to be fair, I am not knowledgeable in tech stuff, but now that i look at it - the Wii u has to process and replicate the battle twice; once on the television screen and again on the gamepad screen, it's actually impressive that it is at least playable in co-op with so much shit going on at the same time. Single player the game runs beautifully without a hicup.

What game would you use as an example? Wii U exclusives are generally very light on CPU processing and multiplatform games built for fundamentally different CPUs don't seem the fairest litmus test.

No game would be a good example, unless we can find one of them with some kind of advanced physics. Multiplats never were a good test, that's for sure.

About how it compares with the Wii, I did some research here. The Espresso (Wii U CPU) is based on the Broadway (Wii CPU) that was based on the Gekko of the GC. According to the specs and hackers doing reverse engineering, the Espresso is a 3-core improved version of the Broadway with way more cache and higher clock, so it's is substantially stronger, but more because of clock and cache, the architecture is the same.

Yeah, I know it's the same architecture,  (PowerPC 750) I was just saying that three 1.24GHz cores with 3MB of cache will perform significantly better than three of the same cores at 729MHz with 768kb of cache.

You should say that this is all done with just one of the WiiU cores.

No Core per Core Wii U has a better CPU than PS4/XBO using x86. Just X86 has more cores however the intel chip on Wii U is better designed and custom.

It's a much more effient chip. x86 need more ram because it's an X86. Wii U is a very well designed custom system. No it's not as powerful as PS4/XBO but the gap is much smaller than you think. In fact think of 6th Gen in power of PS2 vs GCN vs Xbox. Wii U might be more PS2 in comparison.

You're not a very good game developer then if you think one script handles every enemy on the battlefield.