The changes last month to premium tanks XP gain mentioned:
Now I was trying to get some stats on Crew XP from the battle results and I don't see any diffence in tmentXP vs experience for the premiums from this date. Does this count as a bug given that the site show crew XP anywhere much?Your Premium tanks will now bring you the following additional extra advantages:
50% bonus to crew experience. If the possibility of training your whole regiment of crewmen on one tank was not enough for you, you can now progress much faster.
Alas I have no idea if it is +50% on the total XP or what.