Very... Very... Interesting...Basically yes, that is the general evolution of hogs from feral to domestic meat producers.
It wasn't evolution in the wild... it was through years of breeding... selective matings to improve/increase the capabilities of the animal to have more meat/muscle on the carcass. It would remind you of the differences of BISON (buffalo) from the domestic cow... Look at Longhorns that had the heads/horns for protection against predators... big front end... skinny hind end... also made for more/faster maneuverability with the bulk in the head/front end to use as defense...Very... Very... Interesting...