To truly see what XB1X owners are complaining about you need to see this.
Click here to see an overlay comparison
http://screenshotcomparison.com/comparison/115121
XB
PC
The X1X should at the very least have parity with the PS4 Pro version. It really doesn't make sense that "it's too complicated." It's all x86 hardware.
Jesus I had no idea it was this bad. I have the PC version and just kind of assumed all versions were more or less the same, at least at 1080p.