I know this has already been pointed out, but I wanted to further demonstrate why the matchmaking for GA is skewed against ship builders. Below is a screenshot and some stats from my current match:
My toon GP: 1,686,978
His toon GP: 1,921,208
My ship GP: 1,483,202
His ship GP: 1,263,546
My first try toon wins: 5
His first try toon wins: 2
My point in listing all of this is that ship GA points are not proportional to the GP weighting used in matchmaking. CG, please adjust the ship GP used in matchmaking to be proportional to the total points that can be earned from ships.
People, like me, that focused on ships are already being penalized for having G12 geonosians affecting our toon GP.