Lol I ask you to cross your GG4 and hit 30% THC? Bet you can't even with 2 photos you would have to find a 1-1000 plant to get it so your point is not really based on auto vs photo but clone only vs auto? Nothing to do with a seed grow. Grow a pack of so called GG#4 seed and get them tested I bet you don't hit 30%
I once seen a 50%THC + photo strain advertised to. Thing must of looked like a lump of Kief as a lot of hash is only in the upper 50%THC mark. Might of looked like this nasty little photo plant that did not get me high?