Nope, a chunk of games run at full fat, 4K.
Yep and i remember all the nay sayers. Naa it takes a 1080 minimum to run 4k at high settings at around 60FPS so how does a 1060/580 equivalent do it.
It's called optimisation, its generally much easier and more time can be spent getting a game to run on console hardware as its one specific hardware set. PC hardware is a minefield to optimise for and generally games/engines are made for console hardware in mind then ported over to PC and with the many many different hardware types and generations of CPUs and GPUs it takes much longer to make a game run well on PC.
I see it like iphones vs android phones. You can have a much better spec android phone but doing day to day stuff the iphone is on par with the superior android specced phone. Its because android is made with many different hardware configs. Iphones are just a specific hardware set. It makes optimisation easier.
Sorry i'm just gloating in the fact i was right before the xbox one x came out.