My hunter dual welds, but others in my guild single weld. As i should, i got credit for both my weapons. They of course got credit only for their one. My hunter was above hunters in the guild with better stats and dps because of that adiitional 100 or so points. May i suggest you find away to balance this inequity. Either you can give a credit for a 2 handed weapon or maybe find a way to give a weapon score that includes both weapons.
For your consideration,