So… how exactly does this one-sided Cold War work?

I’m not sure if this has already been addressed, but how exactly is a Cold War even possible in this world? What prospects does the Accord even have of beating the Rechspakt, either in a Cold War or a hot one? Why would the Reichspakt fear a war with the accord? MAD isn’t an issue at game start, as far as I’m aware.

The most industrialized/militarized nation of Europe, now in control of the whole continent and twice tested/twice prevailing world hegemon, vs a faction of rump states led by Canada, a country with less people than California and more frozen, unusable land than habitable territory?

The only glimmer of hope I can see for the Accord is if America is on their side on the Cold War. Even then, it’s not an even matchup for years as the US heals from years of devastation. Without the US, is the accord really a more powerful bloc than, say, the ASEAN is in OTL?