This is correct. This Scheme is all about keeping the balance between the forces and adding more tactical considerations regarding whether to attack enemies and which ones.
Well, if you're lucky that's what it comes down to. Unfortunately, in the latter parts of the game when you're rocking the combat, you're stuck with whether you leave them out and hope that they work their way off the track to an Escape. And letting your combat (and thus most of your ability to obtain victory points) sit unused on any given turn Which can be... tricky.
While in the early parts of the game, you don't have enough combat to manipulate the track as well as you might hope to maintain that balance.
We got a tie for the first... 3 out of 4 schemes. More through luck than anything based on who was in the city and who escaped. After that, the Skrulls got the upper hand and there really wasn't much you could do to stop them.
Granted, the Infinity Space Gem and the city-movers like Storm and Blade can help you.