I think you misread my take on saberpeak. Saber and factory suffer from similar issues. The maps lean heavily to one side. In the case of saber allies have to push through open terrain and then pass through the axis spawn to get to the objective. This is incredibly difficult given the number of players and respawn times. Unless allies get stacked, defending the sub as axis gets boring very fast so axis push out from the sub to get kills giving allies a chance to win. I didn't mean axis lose every time, I meant axis generally ONLY lose once they get bored of defending.
Factorys gotten better as people learn the objectives however from what I've seen it still needs an axis stack for them to really have a chance. I don't know if you've gotten a chance to play it as axis with the server full but it's easier to understand the problems with it once you've been massacred for 30 minutes.
And thank you for removing airfield.