How about typical range vs used range. Say you charge to 100%, and it says 360KM but you drive 30KM at 220kwh/km, the 360KM range is a calculated using an expected usage of ~220kwh/km. So after driving 30km, you should expect to see that you have 330km of range left. I am seeing more like 325km left.
That comes to the question of whether air-con etc are counted towards the Wh/km. If not, that explains the 5 km difference
On the S, the typical range is calculated using ~200kwh/km, and if i do drive at 200kwh/km, then i see that the typical range matches my usage. Not the case with the X
Maybe they are using a different formula, maybe they are not, haven't come across any sharing on this yet