FF strains - real or just marketing BS

I've seen quite a few of the well known auto breeders releasing what they call Fast Flowering photoperiod strains. The story they spin is that when they are breeding autos some of the seeds don't take the auto gene and need 12 hours of dark to flower but because of this photoperiod having been bred with autos it finishes flowering in 7 weeks or even 6.

Kinda sounds like a load of BS to me cause autos don't actually have a shorter flowering time than photos. Unless you pull them 2 or 3 weeks early like some growers do. I reckon these breeders are either talking junk or they are pulling the plants 3 weeks early.

Anyone run any of these strains and have pics of one at 7 weeks. All the grow diaries I've seen so far of these strains went at least 10 weeks in flower. If they do finish in 7 I'd def take a punt and bang a couple.

I think almost all "flowering times" are marketing bs. I too recently found these "fast flowering" strains at an event and when i asked the vendor she said they were simply the fastest flowering photo strains they had available.

I am on 55 days since they were in seed mode. I have been in flowering mode for 15 days.
I suspect one of the four will be ready to harvest in two weeks in a week will stop all nutes and start to flush.
Been running lights 20 hours.
Yes they do exist and they work fairly well and grow like they are on steroids.