Would De Jesus be able to overcome the size, speed, and power disparities to outbox the talented but underachieving Brooklynite?
Got to go with Dejesus here. He had had more of the "it" factor than Zab, and was a lot more consistent. Zab doesn't have measurable superior to Dejesus, but in this case, it wouldn't give him the edge imo.
Zab. He'd be a good amount bigger, stronger, faster, and more powerful. Esteban did nothing noteworthy at 140.
I don't know a lot about Zab; I remember when he was fighting and I remember Estaban's wicked left hook. I can't really weigh in here with an opinion but, from what I've read Zab got nailed by a few fighters that were hardly hall of fame material (well, maybe Dejesus as well later on). But, in closing, I'll ask a funny, silly question. Didn't someone cold-**** Zab in a fight and, as a result, he pooped his pants in the ring?