Well, judging the battery would be problematic, since my last machine was a 2010 MBP with the battery about to explode.
It would appear I'm really of no use in that department. But I do get a full day's (light('ish)) work done as it is, so the times Apple stated are not that far off in my experience. When doing more intensive work I have the laptop connected to power, so who knows if it's good or bad. All I need to know is that I can manage with it. And I do, very well.