Some will cling on to Touch ID relentlessly as a supposed advantage, or mutter about 1080p, but the truth is the XR was already the much better phone and the 11 just builds on that.
The fact that the XR is still part of the lineup and not simply replaced by the newer model (like the XS has been) speaks volumes about the success of that phone.
The 8 is left doing budget duty for now, but it’ll be interesting to see how well it fares given that the XR is now that much more affordable.