Yeah it sure is. I remember topping her and thinking "oh. maybe I shouldn't have done that.". She was just hugging the soil and I seriously considered yanking her. Then, she blew up.
To be honest, dunno if scrogging helped at all with actual size. I just find that in this case, she was way in the back right corner, surrounded by 3 other autos. I couldn't really get to her after they all got big enough. And the photos on the other side got massive - if you look on the Live Photography subforum, I just posted a picture of one of those photos that is outside now. So I guess the scrog did help as far as opening her up enough. As you can see, there's a lot of undergrowth there, and some larf, on the bottom. But nothing went to waste.
Topping? That's been debated for a bit in traditional gardening, which I've been doing for a long time. Longer than this type of gardening. I've topped and not topped various plants, and don't know if it increased those yields at all. But certainly helps with plant structure.
I think autos are so much fun, and a great challenge. I'm trying to get some type of system down, top, train, scrog. And will tinker a bit with it next run in the 4x2. One thing I am doing is experimenting with 10 gallon pots vs the 7 gallon I normally use. And next run I am experimenting with 10 gallon TALL pots vs standard 10 gallon to see if that makes a difference.