Bid insanely high.
The Allies have the advantage, simply because the Axis MUST succeed in reaching parity, or it’s doomed.
Chance is against the Axis. No amount of reasonable bid can encourage me to inherit the “Risk of Chance” or “Onus of Liability and Risk”.
As the allies, all you have to do is play prevent, and make sure -they- can’t win. Time is on your side.