Revegs do indeed yeild way more if you give it the proper veg time. I don't always suggest doing this. Actually I do the same shit everyone else. I keep moms and take cuttings.
With that being said, sometimes you get a special pheno and you accidentally forgot to take a cutting from. Revegging maybe your last resort to preserve the genetics.
I suggest not revegging in anything under a 10 gallon pot. 25 gallon is ideal. And I wouldn't suggest doing this hydroponics..
How revegging can be better, well if you have a 25 gallon pot your roots are well established. And if you grow organically you'll have a web of myco's fully coloniated.
People say it's waste of time and effort, that is BS!! Mutha fuckers read some shit online and repeat without ever trying it for themselves. Yes it takes a month to reveg a nice plant, BUT they go ape shit. You'll have tons branches and bud sites.
I kept an awesome cut E-32 trainwreck alive for 3 years, I kept revegging her and she got better and better everytime, but eventually the soil turned into sand. And I let her go.
Fuck what people say, do it. Thank me later.
^^^
I flowered her out 4 times!!!