With that I can agree. Critical as mechanic was never supposed to be about average.
If about 10.5% damage increase is next to nothing to you... well, you have about 16.3% 47.2% chance on full burst to deal more damage than that, about 83.7% 52.8% to deal less (that is assuming all members deals same damage). Yes, I can see situations where random crit is better (never said it was universally worse), but I can see some where it is worse. Matter of preference, really.