We actually did something like this back when i was doing some ju-jutsu. What i noticed is that if there is no difference in height, and no difference in skill, it's a stalemate until one gets a lucky shot. The Arms guy can block the Leg guy's attacks if he keeps his guard up, and the leg guy can keep the arms guy at a safe distance if he knows his fighting. It's a stalemate till one of them gets a lucky shot
~wickerman~