The life of Cesar Chavez is considerably better established than that of Jesus. Chavez had a drivers license.
But Chavez didn't spearhead a moral or philosophical system that underpinned the cultures of a good portion of the world. Mostly, Chavez borrowed from Marx and fought for a limited group of people, who are still largely exploited today. Celebrating Chavez is celebrating a Hispanic multiculturalist token placed in a place of honor by a state whose government was largely opposed to his work and whose officials were and are taking large sums from agribusiness. Celebrating Jesus and the resurrection is celebrating a 2000-year-old worldwide religious/moral/philosophical movement that creates meaning out of life for much of the world's peoples, even now. There's simply no comparison.