Geeze, how much longer are you going to beat that drum.The Xr has at most 1.5-2 hours improved batter than the Xs max.
Thats due to:
1) inferior screen quality 326 PPI vs 458 PPI
2) poorer contrast ratio 1400/:1 vs 1,000,000/:1
The truth of the matter is, only the green pixels on the XS Max screen are 458 pixels per inch. Red and blue are 324 pixels per inch. So yes, if you love super sharp green, by all means.
Having said that, one of two main benefits of XS is the OLED screen (telephoto camera being the other one), which naturally has wider viewing angle (not sure it's all that important for a small screen), deep pure blacks, and HDR dynamic range (which could be part of LCD as well, but Apple chose not to).
While I personally love deep black levels, I suspect folks that use their phones primarily under bright lighting won't notice nor care all that much. HDR dynamic range is incredible, but benefits are limited to few apps.