Note that Britain fielded the Meteor jet fighter almost simultaneously with the Me-262. Hitler couldn't have beaten the combined industrial power of the British Empire, USA and Soviet Union even with a handful of innovative weapons. Russia is, I judge, in a very similar position. Ukraine is innovating at the same time as Russia, and with somewhat more élan, I believe. The bear is a pygmy shrew against the economies of the West. It's our war to lose.