Drink the kool-aid dude.
What cool aid?
You said Apple does their battery testing at one click of brightness, which corresponds to around a brightness 6.25%, you said that is one of the reasons the person was not getting the same battery life as Apples claims
Apple does their testing at 12 click 75% brightness, not sure why you are spreading misinformation. Since you claim you use your display at 2/3(67%) I see no reason why you could not at least get the claimed battery life. Most of the reviews I have seen have come pretty close to what Apple also claims.
Anyways The OP thinks he found out what was causing the drain and it had nothing to do with your inaccurate claims off Apple fixing the battery life numbers. So ahead and spread more misinformation and tell people they drink cool aid.