I barely believe that a lowryder 1 could make more than an ounce in full on sunshine... more like 15 grams average. so 83? are you joking? lowryder 1 was full of micro pheno's and mutants with 3 leaves, it smelt very weird... it smelt of nuts and nutmeg to be precise, a very strong nutmeg smell, which was abit crappy. JD grew many many of them and i expect his average yield was 20 grams not 83???! so i think there is a mistake. if you planted 30 of them and took the largest you might have 12 big but not just average.
Second think i want to clear up on this thread.... autoflowering trait genetics are recessive, so a cross wont take abit longer it wioll be totally photo, it's f2 will be 1/4 totally auto, and the f3 from these auto f2's will be 100 percent auto, and will contain half the original auto's genetics. therefore, any variety in teh seed shops, with enough work, will grow as fast as the biggest brazilian or thai indica crossover monsters, but will flower after 3-4 weeks. it's it's a subset of genes with mulitple complex triggers, we may be seeing 2 meter tall auto's one day, that can live 4 5 months, but it would take years to find the right hybrids.
for most autos except the big ones (think different, big devil xl) in good sunshine most people agree you get about 20g to 1oz per plant, in hydro maybe 2x that.