Most customers will probably just notice it's $250 cheaper and won't really care about OLED and the…
For a lot of us the difference is $350-450. The XS/Max is only available in 64, 256, 512 sizes. Many of us need more than 64 but 256 is overkill. The XR is available in 128 which is perfect for my needs. So the XS/Max is $1149/1249 for the 256 model. The XR is $799 for the 128 model which is $350/450 more depending on which XS you choose. I don't currently need a new phone, my 6s+ is still going strong, but if I did the XR is the only one I would look at. Lower screen res or not.