The absolute numbers are on your side certainly, but you don’t generally win wars by the number of deaths. For instance, the current Russian Fascists would have lost the Ukraine war by now if that was true. Also in the Vietnam War, USA caused way more casualties but completely lost the war. Both wars in Afghanistan, same thing. Latest US invasion to Iraq wasn’t exactly a victory even though they killed a lot of people there.

Also, we are not yet in the phase where communists are killing nazis. We’re currently in the phase where communists are de facto allied with the fascists against liberals and centrists. Like – if you remember your history – happened also in the 1900s before Hitler backstabbed Stalin.