There does seem to be quite a critical gap of anecdotal evidence that is quite impossible to fill. Easyjet pilots will readily admit that even just a few years ago their airline was a very different (read: worse) place to be. So naturally those that have left it for BA in that sort of timescale will quite rightly say their life has improved with the move.
At the same time, someone who joined BA more recently might only have experienced the low seniority, no weekends off side of the BA machine, and be disappointed.
Nobody can have experienced both the modern day easyjet and the "off the bottom" side of BA, so we're left with trying to build a picture of life at either airline with what we've heard from friends/colleagues.