this. When you want to lol every time your own unit fires it's pretty obvious there's something wrong.
You are making A LOT of assumptions here. First off as stated by many people the game really isn't balanced for 3v3 or 4v4; I doubt it was ever really intended to be and I doubt it ever will be so not to be dismissive but I feel like what happens in "big games" is a moot point, no offense meant.
You're envisioning some rather specific scenarios here; I could shoot specific holes in these scenarios but it's probably more constructive to simply say these are just a few possibilities and very often things play out very different from what you are describing.
September 24 Patch :
OKW Economy
The previous increase in munition rate for the OKW significantly increased their potency within 3v3 and 4v4 environments to a point where it became problematic. This compounded a number of issues which resulted in the faction significantly over performing relative to its counter parts. Until we are better able to identify and resolve those compounding factors, we are going to revert the munition change to a lower value.
Resources
Munition rate from 100% to 80%
"Big Games" moot point, you say?
Well, "moot point" you put it, seems like a reason to nerf OKW in 1v1 as well by Relic it seems.
And the scenario isn't that far off. Assuming at a equal player skill (which would give map control in favor of the allies), by the time OKW is able to call-in a Jagdtiger the Allies should have 500+ equivalent fuel in terms of unit value.