Apple can't compete with so many laptop manufacturers on build quality alone, Razer new laptops, zenbook 3 all have more advanced hardware as compared to any version of macbook, but it all comes down to operating system
I have been using macbook pro 2015 15 inch, my beefy gaming machine n Asus laptop as well, certain software's just perform much better in OSX or Hackintosh than their windows counterpart but when it comes to games, then any winsows machine can beat any apple computer hands down
So there is a very defined world for every type of user
I mostly edit photographs n videos on macbook or Hackintosh because there is no software on windows as good and fast as final cut pro x or Capture One
but for games I always use Windows
So zenbook 3 is definitely an amazing macbook 12 replacement, Zenbook Pro UX501 can even be Hackintosh-ed I'm sure in few months we will also be able to run osx on zenbook 3 so all in all it can be even a 13 inch MacBook pro replacement also