Yep, 6-10 top colas would be better than 2 right?
Well, I suppose so. Unless those 6-10 cola's equal in yield the same as the two cola's.
I've heard that each time you reduce/split the main cola, that in turn reduces the eventual size of any future cola's. The method you describe does create 6-10 cola's yet, it also serves to increase the footprint inside the growing area. Doesn't that decrease the number of plants which can fit under the lamps? Take four round domed shaped plants, each covering a 2-3 sq ft area.
Now take a plant such as depicted in my pic.
How many more plants could I fit inside that same 8-12 sq ft area?
I can say, your technique would be very useful on parental stock.
It might be even more beneficial to be applied on Male plants, increasing the number of pollen-filled spikes. I'm re-vegging a Nepali male now, maybe I'll apply this on it. It is a very tight internoded plant so, not sure how well I'll be able to squeeze the stems between nodes.