Yeah the above works out to be true in most cases. Someone gets the better of the off ally while the other guy struggles. In FFA, having off allies is basically automatic. But any FFA player will tell you they balance their hits. Do maybe 8 hits with one and then 8 with the other and that balance allows you to run with fewer jets.
It's just difficult because it's so hard to arrange ok I make 8 hits and then you make 8 hits or whatever every single day. And then someone hits a grab phase and destroys all of your jets and you continuously play catch up while they keep getting huge and destroying your milit. It's just super hard to manage a mutually beneficial o ally on 1a