The XPS 13 2-in-1 is better for me if only for this reason. The XPS also comes with a pen, USB-C, and a decent hardware configuration like 16Gb of ram because we are in 2017!!!
I just wish I could get QHD+ screen. No option on dell.com, while I see that on https://www.amazon.com/dp/B01N5MV7YA so it must exist somewhere. I also have been told that it may be possible to get a trackpoint on similar models that share the chassis - but no touchscreen then.
Oh, and there is no LTE in any case. I guess I will have to wait for 2018 to at least get the QHD+ option.