Choosing Opponent's Battlefield at beginning of game?

By abellt, in Star Wars: Destiny

We are having a debate at work around what exactly happens at the beginning of a game when you choose the opponent's battlefield. Half of us think if you choose the opponents you get to go first and they get two shields. The other half say that if you choose your opponent's battlefield they get to go first and you get two shields. Does anyone know the correct way this works???