It is like mpg. There is the mpg on the sticker which the epa rated then there is how you and I drive. We are talking about the static one.  Of course when I am driving I am also watching my miles per kw, less at very high speeds and more when in town.  It is all about time and distance.  And no, idle fees are not time based charging. It is time based sitting around. You not charging at all when idle fees are charged.  Every single charger should know when the charge is done and be able to do this when just plugged in and finished. There is no need for a network or anything. 
Anyway thank you for the complete information. I don’t think there is any third party charger for my car which will do better than the 60amps - 48 amps used. 
Battery math is complicated. Don’t see how governments can mandate shit into existence- lol.