That 11 hours is amazing in case you were actually using the machine all the time and it was not sleeping half of the time (or it was not plugged to charger)?
Max brightness sure would drop run time but still Apple claims they test 10 hours at 75% brightness which is much brighter than what I usually use mine… Anyway, I guess my use is such demanding because I often use AirPods with my MBP. 🤫
People always report more base from working hours not real using hours. Like me working 8 hours a day, if my laptop can survive until the end of the day then will said is 8 hours. What about the idles time? Lunch time? Meeting? If 8 hours working and I can guarantee 2 hours is idles.