Kiksroks... short answer, yes.. long answer.. think about this.. if you put 10 plants into your space and grow them all.. you will have ONE main cola on each plant.. and then a few smaller branches with smaller tops on them.. with SCROG you could fill that same space with ONE plant.. by pulling the top of the growing branch back thru the wire and keeping it under the wire, it will keep growing sideways and the lower branches will grow up thru the wire.. eventualy you will have the entire screen filled with shoots which will become tops... so when you put this one plant with 20 shoots that are all at the same height (due to the screen) into flower, they will flower like tops... so basicly you will have 20 main colas on one plant... OR.. a week before you put the plant into flower you can top each one of these tops and they will grow 2 tops in each place.. so you could basicly have 40 main colas..
This was just an example but you can see where im going with it.. basicly you can get more main top colas in the same space with less plants... the only thing is, you have a long veg time.. takes awhile in veg to fill up the screen.. hope this helps.