might just be that they take better care of their feminised seeds because their worth more, so impart they are healthyer and germinate faster? its just a guess but it sounds right dosn't it
i ahd mine germed and showing growth in rw in on day! Fem cheese seed from greenhouse. Not growth outa the rw that took like a week but growth in rw, wow.
been trying a few quick internet searchs with nothing popping up on this topic. So i would assume theirs no basis behind it but i will keep looking. Maybe someone else will post that has had a similar experience