Yes it will outsell all the other phones combined. My point was that the main reason a potential 8 Plus owner wants this device is the bezelless design and the screen. By 16:9 standards, the effective screen size of the X is probably close to 5.1 inches and that’s a downgrade from the Plus and along with lesser battery life yet it’s only the design which is why it’s popular. Internally it’s almost the same so there’s just no reason why the 8 Plus is selling in lesser numbers than the X except it’s the superior design of the X.
The Plus owners are getting their 6.4 inch iPhone X Plus next year yet they are getting enticed by this smaller phone. I am guilty of it myself but I just can’t bear not looking at that bezelless design. The Plus design is getting long in the tooth.