a real test case would be assassins creed unity with it's massive crowds.

You just could have checked the video and then you'd know that they used a 750Ti coupled with a Core 2 Duo. That combo barely compares to the Xbox One (slightly more GPU power in theory, but that gets hold back by the dualcore CPU and it's FSB so much the Xbox should almost be able to run circles around the rig. In effect it's about what the Switch should reach.

What do you mean? I have both versions and apart from a lower FPS, they play almost identical and post Launch switch version looks alright alot less blurry than when first launched.

Just because the game runs on UE4 doesnt mean it's guaranteed to work on the Switch. The dev's expertise, how demanding the game is, and many more factors are in play here.

For example, Ace Combat 7 runs at 720p at a very unstable 40-45 fps on the base xbox there's no way that runs on Switch. Because of the terrible optimization by the developer.

The 750 Ti is a PS4 level GPU. Maxwell is much more efficient, per streaming multiprocessor, than the GCN architecture in the XB1/PS4. And CPUs don't evolve as fast as GPUs. The Core 2 Duo performs better than Jaguar CPUs quite easily:

https://www.game-debate.com/cpu/index.php?pid=1961&pid2=15&compare=%20APU%20A6-5200M%20Quad-Core-vs-Intel%20Core%202%20Duo%20E8400%203.0GHz

Granted, the PS4/XB1 can use 6 or 7 cores instead of 4, but at a lower clock than desktop Jaguars, and even then, the difference would still be there in favor of the Core 2 Duo. If it were a console, the Core 2 Duo + GTX 750 Ti would be close to the PS4 graphically, and be much more balanced than the Wii-U (the console which had the largest CPU-GPU gap I can think of ).

There is this huge misconception that Switch is not capable of running many PS4 games, because of it's specs. Very false. If they wanted it, the developers could port at least 95% of the games to the Switch. The Switch's hardware is not the issue. Furthermore, since Switch is selling on par with PS4, it is clear to developers that there is going to be an install base big enough for their games. There is actually another issue holding developers back.

The issue is cart size. The bigger carts are expensive. Many 3rd party games are not being ported right now, because devs are waiting for cart prices to drop. My understanding is that Hellblade is not that big of a game, correct? That is why it is getting ported. Cart prices are low for Hellblade. GTAV on the other hand is a 7th gen game and it still isn't on the Switch. That game is huge. The issue is cart size. Games that are pretty looking, but small will come before games that are older but huge.

I mean this. https://www.youtube.com/watch?v=-9RG21GHC0U&t=237s

Dont have the game yet, will get the ps4 version. 

The 760 does, the 750Ti is much more akin to the XBO GPU. There's a reason why AMD markets the RX 560 as a 750Ti upgrade path, despite the RX 560 being roughly PS4 power. Here you can compare both GPUs and see how the 750Ti just can't keep up in any metric to the RX 560, which is considered 40% faster than the 750Ti.

I don't agree on the CPU because the E8400 is very, very slow by today's standards. In fact it can't lit up a candle to any Bulldozer chip, even the weakest ones run circles around the E8400 - and we all know how derided the Bulldozer got for it's low performance.

It's true that CPU don't evolve very fast anymore - but that's on Intel practically stopping caring for IPC after Ivy Bridge (Core ix 4xxx series) and just clocked a bit faster and added some cores since Ryzen came to be. But until then Processors evolved very fast and you had to chance your CPU almost as often as your GPU if you wanted to keep up.

Here's a much better comparison, as you can see the A6 6310 is roughly equal to the E8400 even on per-core performance even though the E8400 has a much higher clock speed, and the A6 goes right past the old Intel chip in multithreaded performance with 4 CPU cores already, so you can expect that the 6-7 active cores on a PS4/XBO roughly double the performance here.

That looks like two different games to you? To me it's like the difference between most cross-gen games in 2014/2015.

Yes it does... On top of being blurred as hell like I am playing the game without my glasses on, they even removed a lot of the efforts, look at the time. 

http://www.youtube.com/watch?v=-9RG21GHC0U&t=4m0s