It's too early and too tough to tell right now. It's an open division with no one sticking out in talent. Maybe if Bradley beats Pacquiao this time out, but you also have Brook fighting complete bums. Thurman/Porter just got cancelled which would've answered some questions.
You also have prospects becoming contenders like the following: Spence Jr., Mikhaylenko, Vasquez. Each of these dudes is fully capable of beating the other.