It would be a great fight. It would also legitimize Khan getting a shot at the winner of Garcia-(Matthyse-Peterson)
At this point, I would give the nod to Khan. I respect the fact that Amir Khan is always looking to fight the best fighters in the world. His resume is stacked with good and amazing fighters. The Malignaggi win was also good. Barrera, Maidana, Judah, Molina. Broner has Demarco, and a fight he arguably lost against Ponce De Leon.
It is a H2H question at their current state. Not a P4P, prime-4-prime question. No doubt Khan has a better resume. But H2H, Broner is too active, accurate and as quick and strong as Khan. Not to mention he has better defense. He is no Mayweather defensively, but Khan is not a complex fighter.
Well 24 year old Khan beat a younger Paulie to a TKO decision. Let's see how broner a guy with more power than Khan does...