Muscles Vs. Technique Arm Wrestle Battle

Two best buddies armwrestle just for fun. One of them loves gym and it reflects on his hot body. At first he poses topless and shows off his bicepses and Six-pack. Other guy is a chubby bear whop never says no to a challenge. He also poses a bit before the game. Guys compare their strength on open air parking lot. SO who is going to win? Is it going to be the muscles or technique?