Prince is...or was...really really good at swinging a baseball bat. Generating the bat speed that he did before his neck injury is not something any guy off the street can do. If you study his swing from his days with the Brewers, he's using his body perfectly to generate the maximum speed and power through the strike zone. He was durable as hell too...didn't miss a game for several years.
The violence in his swing and his refusal to take a day off here and there ay have bit him in the ass though. He needed neck surgery earlier this year while he was facing a 3rd or 4th straight year of declining HR totals.
I wish him luck..but the neck injury might slow that swing down just enough to turn him into an average or worse MLB hitter.