Awesome! Thats some pretty cannabis. To each is there own and its best to try all methods and pick what works best for someone. It has a lot to do with confidence as well. Even if a method might not be scientific proven to work better, someone that is confident in there method may pull more weight because they know there method and how to utilize there method.
I personally have tried both and can say for sure that no defoliation works the best for me. But I love big ass plants and monster colas. Some people may not have enough room to grow like I do so they utilize what they have. You can cut a plant half way down and still produce awesome cannabis! Thats one of the many reasons this plant is truly amazing...
From what i heard stress at the correct times can make a plant grow more vigorously so maybe it has some truth to it! Just not for me.
As far as Bassman goes hes a very good grower and respected here. I hate what happen to him. As far as his yield that really doesnt tell me any thing and is actually kinda small compared to his growing style and lights. Im not sure which grow this was but he always used 1000 watt HPS for flowering until he switched to LED on the last grow. His numbers are low when u figure in what he has. With the 1000 watt HPS he should pull close to 700-1000 grams of dried herb under that light to get close to the 1 gram per watt measure. He only has like he said around 12 ounces which is around 340 grams... Personally I am pulling very close to my 600 gram mark for each 600 watt I have with no defoliation. But on one of his grows he had to put in a 400 watt bulb instead of the 1000 watt so maybe this is that grow. If so then his numbers are pretty spot on and he would hit his 1 gram per watt. There again this isnt really a comparison for me to show that defoliation worked in this case.
The thing that I would say about defoliation is that it can for sure get light to your whole cola and lower bud sites. I get pretty good penetration with my HPS but if I scrog some areas could be hidden under other colas or stacked together fan leaves. Thats why I now will only do one plant per 600 watt HPS so I can get better light distribution, better airflow, and monster colas!
Keep em green!