Really ? I am not big fan of higher res as I prefer gfx over pixel but 1080P should be standard now. I can't see the X competiting with PS4P. Though PS4 will be the most popular I am sure
Resolution comes with the graphics package. You will get improved image quality with games being rendered at 4k on a 1080P display.
Go with a high-end android tablet. Ploblem solved.
They actually exist?