The total spending does not say as much as you'd think, since a large percentage of the Russian military budget goes to the Strategic Nuke forces (which are not

The total spending does not say as much as you'd think, since a large percentage of the Russian military budget goes to the Strategic Nuke forces (which are not very useful for the war in Ukraine) and another sizable chunk goes to the navy (most of which is not even present in the Black sea atm). There are also sizable inland forces for "maintaining political stability" that take up money from the budget but can't be deployed abroad. This means a large portion of Russian military spending can't be used in the current war. OTOH, almost every Ukrainian military asset they have was acquired with an eventual defense against Russia in mind so they have a much better rate of available fighting power per dollar spent.