If this is true then the information on the official site is misleading. They say "EIZO EasyPIX is a hardware calibration solution that directly adjusts the monitors color settings". So does it adjust the monitor (LUT table or anything else) or, like you suggest, do they call it "hardware...
Let me calculate that for you.
By the Pythagorean theorem:
a = 21x
b = 9x
c = 34 inches
a^2 + b^2 = c^2 <=> 441x^2 + 81x^2 = 1156 <=> x^2 = 2.21 <=> x = 1.49 so the height is 9x = 13.39 inches roughly for the 34 inch 21:9
and for the 27 inch 16:9:
256x^2 + 81x^2 = 729 <=> x^2 = 2.16 <=>...
Are you 100% sure on this information. It is clearly stated on the manufacturer's description that it does support hardware calibration (if you buy the right hardware from them) right at the bottom of the page.