My Surface Pro 3 (12.3"display) is 2160 x 1440, the iPad Pro (12.9"display) is 2732 x 2048, the fonts and icons are tiny but the display is awesome. Kind of a trade off between usability and rich graphics.
I love the iPad Pro, but I think the major drawback is iOS, I'd much prefer to see Apple introduce a convertible with a full copy of OSx.
I know a lot of people frown at convertibles as not being as good as a laptop and yet too bulky to enjoy the portability of a tablet, they are the toaster oven of laptops but once you use one for a bit the advantages seem to far outweigh the shortcomings at either end. Again though, that will ultimately be decided upon budget and user preferences.