Sounds like you're armor migi judging by the tanks you field. I would recomend focusing more on support teams and light vehicles as your capping forces due to the benefits from the armor tree.
I am actually airborne, I bring either 7 M10s and an M8, or 2 crocs 3 M10s, 2 quads and an M8.
I realy dont like being out gunned by anyone, in cluding armor players.