this is just a theory as i've had nothing to do with the autoflowering variety, but don't they run a very short cycle (thus the appeal?) and if that is true, isn't super soil not only a bit hot but also a little long lived for autos advertised to go from seed to weed in like 60 days? the last time i grew in dirt, my gals went almost 60 days in veg and it still had enough juice to see them through another 60 days of flowering... sub or another of the more advanced breeders may have more insight into this, but it is my theory that this will be proven to be true once tested on a large scale...