Well it is important to understand how femenized seeds are produced, the bottom line is if the mother plant of the seeds was a crappy strain it will be crap, if the mother was good then it will be good. the mother's traits show more than the male plants. now femenized seeds are produced by crossing a female, with a female plant that has been stressed male ( whether it be with lighting or giberallic acid solution sprayed on).What happens here is that XX chromosomes will be crossed with another pair of XX chromosomes. So if you remember biology punnett sqaures there is a 0% probability of male plants. You see most seed banks will mention seeds are 99.9% and that .1% is due to environmental variables ( stress ) But just because they are femenized does not mean they will be better necessarily. it all has to do with what traits were passed on from the mother plant.