RIT students are also MLG. It depends on what you consider "MLG"... I consdier anyone in the ACTUAL MLG Pro Circuits or tournaments/events 'MLG". If you are not in the circuit and on Gamebattles, I wouldn't call myself MLG, but rather a fan and supporter of MLG.
You can challenge the RIT/DDT Halo3 team, contact Frozen at Deafgamersonline.com. I'm curious how you do aganist them. If you are truly an MLG team, post a link to the team. I don't take MLG lightly, so I would like to see proof.