Crawford opens up Chavez, keeps the jab in his face and the lets the counters come themselves, offsets his timing and rhythm with it, so when Chavez does commit, he’s throwing blindly, and Crawford is able to see it coming and counter him. He’d measure him and time the head movement of Chavez as he ducks and as he pulls back out. It’s a horrendous style matchup for Chavez.
JCC was still at super feather in 1987 until November of that year when he moved up to 135 to fight Rosario. But since the proposed battle ground is 140 I’ll play along. And in truth, junior welter WAS arguably Chavez’s best weight ( or in my opinion. ) Bud Crawford didn’t spend much time at 140 but he got a lot of work done unifying the belts and beating the best around. And he did it over the course of perhaps 7-8 fights ? He also showed tremendous success both above and below super lightweight. In addition, when I look at the tremendous fights Roger Mayweather and Meldrick Taylor gave Chavez it’s hard to imagine Terence not doing at least as good perhaps better. I’m leaning toward Crawford by a decision.