Get your point about the screen, however to say it’s a downgrade is ridiculous. The internals between the Pro and the 11 are the same, the camera is the same. You get telephoto on the pro and a more premium stainless steel finish - that and the screen are about your only difference.
However OP would also benefit from increased battery life and a larger screen. It may not be OLED but Apples LCDs are the best in the industry
Doesn’t the 11 still use Intel modem? If so, then it is a downgrade from the iPhone X.