That's  an interesting theory - too bad it is completely disproven by the known facts. Including the fact that USSR gender equality was not at it's highest after world war 2, in fact it was lower than at the start. The HIGHEST level of Gender equality in the USSR existed in the early part, under Lenin.

Stalin rolled it back significantly when he came to power. Though it was still higher than in the west. He was forced to increase it again due to the world war 2 losses (so what you're talking about happened - it just doesn't mean what you think it means) - but the increase then was minimal -it was never again as high as it was under Lenin.

The USSR's levels of gender equality was also lower than the rest of the East bloc after Stalin came to power and right up to the fall of the Berlin Wall. East German woman enjoyed a far higher level of equality throughout the entire cold war than Soviet women did, and both had far more than Western women did.