https://www.asus.com/Laptops/ROG-GL502VS/specifications/This is the one i am still using atm.
Considering i got it for about 1300€ about 3 years ago, it was a quite decent deal. So far 3 years gone and not a single issue with it, same as i never had any issue with any Asus (laptop or phone) I've gotten, and it has been a few between myself and my wife.
It is noise when you push for it, but that's about it. No issues with heating though, and not even using a cooler. And up until this point i can run everything that is out there (
as you can attest by my steam library), given that not all in 4k, but then again, 4k in a 15'' inch screen is basically a pointless exercise.
If its a gaming laptop like mine or the one you posted the specs of, you should not have heating issues. When you get a performance compact laptop with a decent graphic card, then you get heating issues.
That said, i got a laptop because i needed it for work and didn't really want to spend much upgrading my desktop (that i had no were to place still as it was right after i swapped houses) and my laptop at the same time, so chose just one.
If you don't need mobility, then always go for the desktop, the same specs will give you a better performance and for a cheaper price. If you do need mobility than a decent gaming laptop is a great compromise, but with 17'' i fear for your back. Mine with the charger alone is above 4kg plus all the crap i place in the backpack, that one will probably be even heavier.