He will breach his defence but Starling was an adept inside fighter. He had enough sting to keep Pryor at bay IMO. Starling could be lackidaisical when faced with a mid-range guy, but Pryor would come into Starlings best range and do half of Moochy's job for him. Points either way, I lean towards Starling, freakishly strong at the weight, only saw him pushed back consistently once, by a peak Curry in their second fight.
Yeah, Starling was a great inside fighter and short range counterpuncher when he was actually letting his hands go.With his strength, chin and technique he's not going to be pushed back by many natural lightweights. Pryor would make him fight and in doing so, would doom himself.