Spence is a good pressure fighter but hes a take 2-3 hits to land 1 pressure fighter. His game always played into Buds counters. Duran was faaaar better defensively with EDUCATED pressure and counters of his own. He still walks Bud down.
I think it'd be a great fight. Duran is alot more skilled than Spence but also alot smaller. I doubt he outmuscles Crawford up close. Both guys have the attributes needed to create a great exciting fight. Maybe I'm just high off of the Spence performance, but I favour Crawford here ever so slightly. Crawford's size, speed, iq and stance switching would have Duran fighting an uphill battle imo.
Impossible to predict since we don't know how good Crawford's chin is. Leonard had a good chin. Duran still hurt him bad at least 2 times.