You dont screw each other at all stalling...only MA. While you stall your kd is building up enough explore pool to launch a bank. Your not losing that much of your pool to decay over what you'd typically have to before launching.. then IN war that pool will keep growing. Post war win you get to use all that pool to explore up 2-3 additional "cows." MA doesnt, they more than likely have 48-72 hours after their eowcf before Mercy/HoH can start hitting them, thats not enough time to use their pool, pump AND counter a homes swap build unless they win and win enough to have a size advantage. (something your stalling makes it more and more unlikely to happen)
Thus as long as you guys win the war and ensure that MA is a bit small to war & win any next war you can out explore your competition. The only assumption that requires is that while u launch banks/explore MA & PewPEW dont just feed acres to mercy/HoH via losing their banks w/out do bank damage back.