It has nothing to do with the hardware and everything to do with the state of THQ's finances. It was pretty clear right from the beginning tbh.

It's because the Wii U offers pretty much the same experience as the other 2 consoles, but has just over 1 million users, as compared to 70 million+. It's not economically viable to develop for the Wii U.

Are we also pointing into mind the pipelines and its on MCM chip?

you do realise that the i7 in the comparison is just 640MHz slower than the i3 rather than the 1.5Ghz slower of your example right? Even with the non gaming tasks none are double the performance of the i3 with a much smaller gap in clock rate than your example...

So given double the clock rate an i3 would win against a i7, because the performance scaling over multiple cores is nowhere near as good as the scaling with clock rate. Also balancing workloads perfectly across multiple cores is basicaly impossible for most CPU workloads. 

For example http://www.anandtech.com/bench/Product/47?vs=677&i=38.39 and that is with a workload that scales very well across multiple cores. As you can see the i7 even with twice the number of cores, much larger cache and hyperthreading is nowhere near double the performance of the i3, even with a just 20% lower clock that the i3. 

Yes core count and architecture is extreamly important for CPU performance and a lower clocked CPU can beat a higher clocked one, but your example is still flawed.

A fitting counter to your initial flawed comparison.

What is?

THQ could have just stated they ran out of money.

that might worry investors 

Cheap and easy porting still doesn't matter when a company went into default to Wells Fargo and is in forbearance on their loans now. 

If all you think about is sales of a single game, you're probably right.

But the thing is, games on a system have a synergistic effect. You can create a market on a platform with one game, and then leverage that market with the next game, and grow it using that game for the release of the third one.

Furthermore, the vast majority of people who buy a console early are going to be interested in getting games early for it, and buy games more often than others. While it's true that the other systems currently have 70 times the total install base, it's actually a lot closer in terms of people likely to buy any particular game, because people who own a 360 or PS3 are likely to already own multiple games of the same genre as Metro: Last Light, whereas there are few games to compete with on the Wii U.

In the end, THQ's decision makes as much sense as any of their other recent decisions - the same decisions that has led to them being in the hole they're currently in. And if they think the same way that you just did, then it's not a surprise to me that their company is failing.