Engineering explained has a good video on this https://www.youtube.com/watch?v=W2txPzRP5DM it also addresses some of the user experience in aspects in a quantitative way. The vehicle efficiency is a factor, since it mean needing less energy. But really Tesla is far and above the other companies with the user experience in regards to charging. You can just plunk in your destination in the onboard navigation and be reasonably sure that everything will go smooth. Tesla monitors their chargers, tries to steer you to where you will get service and the chargers will perform very well charging your vehicle. It's a good experience.
Mach-e using Electrify America is probably the next best. But has issues.
Porsche/VW don't really have a good experience, and the others are even worse.
Tesla figured out early on that they have to sell an entire system, not just a car. Depending on 3rd parties to make that happen is foolish when it affects the core viability of your product. As the legacy OEMs are finding out.
I'll gladly eat my own words. I had seen some video reviews of the ID.4 and the ID.3 on youtube complaining about getting far less range than what was advertised, but seemingly the advertised range and stated battery capacities seem to indicate that the VW EVs are just as efficient as Teslas are.
