Can Russia's larger manpower and aircraft numbers decide the war?
Short answerNot by themselves: logistics limits how much of any force can be supported and employed at one time.
NotesA large army matters only to the extent that it can be sustained and concentrated where needed. The discussion uses Russia's shift from a short-war expectation to a long campaign as an example of logistics determining operational reality. Civilian vehicles pressed into service are offered as a warning sign rather than proof of healthy military sustainment. Britain after Dunkirk supplies the comparison: improvised civilian vehicles supported emergency home defence and were replaced as quickly as possible rather than treated as evidence of offensive strength.