It sounds as if your friend hasn't observed how successful Huttball teams operate. If he's new to the zone, he may be confused during the match and not picking up on how things work. My first Huttball matches back in January were chaos. Now, more people understand their role in the game. When he figures out how to work with the ball carrier, defend the catwalks, and how to position himself for a pass or a carry, he might enjoy it.
Then again, he may be measuring himself in terms of medals rather than wins. Studying up in this forum would provide some insight as to how medals are gained. Of course, with the new patch announcement, medals/valor will be quite different from the current system.
As others have said, the luck involved in Huttball determines the makup of your team. There's not much you can do about that.