Alright to clear this up. First off yes I talked it out with Green to try and end the fight. When it comes to outmaneuvering her she was in a rage and using a lot of unnecessary movements in between her attacks and basically screaming her thoughts out giving Gabriel enough time to react and prepare. As for lasting out Trans-AM even as things were going not even Gabriel would be able to last the entire 3 minutes that Trans-AM lasts and seeing how Green is to join our team Gabriel kinda had to walk away the victor and all that. As for the shields they are covered with a anti-beam coating on the front, but not from the back so a powered up Beam Saber would be able to melt through it saying how the GX only has the same basic armor as the RX-78-2. As for severing the small line Green did say that I could cut off the arm, but wanted to minimize the Damage to her suit. If it would be better I can change it to cut off the entire arm. And as for my personal Damage i can change that as well, but I was thinking Gabriel would have to move to fight Victor once the Exia was dealt with. And with my suit still being a Mass Produced unit that isn't all that great at the moment I thought loosing my main way of defending myself (as well as my ranged weapon) was a big enough handicap to move on with. Its not that I'm playing at being overpowered, just using an unstable opponent and greater piloting skills to my advantage in this fight.

Edit: Edited my post to take the Exia's arm and added a little damage to my suit although it might just be superficial damage.