THC level AF vs non-AF

ive heard and read that auto flower thc levels range from 20-35%. i was wondering what the difference in thc level is between af and non-af plants?

what autoflower strain have you come across that claim that high of a percentage of thc? i hate to break it to you but regular versions of strains don't even go up to 35%, let alone autos. autos have a lower percentage of thc because ruderelis(sp) is a low thc variety and they just cross it with good strains to get them to auto. most legit breeders claim their autos are in the 12-16% range wheras the same strain may be as high as 23% in the non auto version.