"I wish we lived in a time where you could challenge a man to a DUEL!"
booky marky!
But you can. And people do. Legally. Just not lethally.
Pay for some time at the local gym. Put on the gloves. Pick a couple of charites. Roll camera. And don't pull any punches, even though both would look a little awkward, drunken boxing, without much punch. Trying to knock the other guy out, nonetheless.
Matthews is heavier. Younger. He might be quicker. Or at least he might put more behind his punches. If nothing else, he is heavier.