[11t]

An immediate re-raise is more advantageous the broader his raising range you have dominated. A stop and go is superior the broader his range that you are racing against.

Villain pot committed himself by raising such a large % of his stack PF and is not folding, so if you have a hand that is marginally better than his but could be racing against a large % of hands he is raising 6xbb with (and sure to call your push with) than a stop and go might get him to fold some hands that either have you beat or are a marginal favorite against on the flop.

For example, lets say villain raised with JJ here and has Hero dominated. A stop and go in this position might get him to fold if a K or A flops. Also if he has a hand like AK and you do not want to race (some sort of bubble scenario) than a stop and go only allows him to see 3 cards instead of 5 and will (theoretically) decrease variance as long as you don't push into him when he hits the flop 33% of the time.