Most likely. Unlike Maidana and Porter, Crawford is a great finisher. He has the killer instinct and he knows how to apply it. Once he has somebody hurt he applies the pressure and lands a combination of hard accurate shots. His ability to finish is up there with Gonzalez, GGG, and Kovalev.
Being as though Broner would run his mouth and annoy Crawford, Craw would make it a point to give Broner a prolonged beating. Craw TKO 10.
Broner is much bigger than that chump. I mean Porter and Maidana are huge as well. Can Crawford handle his side and power. I don't think he's anywhere near as durable as Maidana or porter