The image lacks in my opinion the key force that puts Russia and the US light years ahead of the rest of countries, including China, and it is not the nuclear weapons. I'm talking about both attack and defense missiles number, technology, delivery systems, capacity and ecosystem, including radars, interoperability and area covered.. both offensive and defensive.

We haven't had a war of the sorts since WWII, only proxy theaters. Delivery means and technology have massively changed. Both countries have the capacity to fully neutralize 80 to 90% of the military main infrastructure of a country like Ukraine before sending a single vehicle, helicopter or soldier. We have not seen it in action yet, only glances here and there in a much smaller scale.

I doubt it will happen, but in that theoretical scenario where Russia clearly intends to fully destroy Ukraine's military infrastructure with disregard to the consequences, hundreds of guided and non-guided missiles would rain every hour on every base, airbase, ship and bataillon position in Ukraine. That would be the endgame, but like I said it is very unlikely to happen because Russia is leading a geopolitical war with the intent to change the world order, I think that Putin's goal is not to defeat Ukraine the way we conceive a war between 2 countries.