Thats what I heard also and I tend to believe it to be true. Reason being I go to a SOG from clones and my plants get about 5 feet with no vegetation whatsoever. I grow them in a 3 gallon pot. Hence 3 gallon pot 5-6 foot plant.
Now SOG.
I do my SOG from clone and not seed. If I was to do them from seed I would wait till alternating nodes then put them into 12/12.
From clone I cut a larger clone than normal,something about 8 inches long, and start to root this. For me this useually take 4 days to see roots. From there they go into a 3 gallon pot with Fox Farms Ocean Forrest and right into flower. Within 2 weeks the root system has established and new growth has been seen for about a week now. This is about the time flowers start. In aprrox 8 weeks they are ready for harvest.