...But change just a few variables, and Japan could easily have occupied Hawaii with that sortie. The resources were there, included as part of the very operation even - Japan just squandered them. A reckless idiot like Hitler would have put all the eggs in one basket and pelted the enemy with them to total submission, such as with his gambles on the Netherlands, or Norway, or Crete. Yet for Japan, mere bombarding of the battleships was gamble enough.There was no ability for a third strike, that fuel was needed for other operations on the way home. It was not even planned, just a desire by the pilots.
Russia in turn could have fallen simply if Stalin had a rare sober day and sensibly evacuated from Moscow when the Germans approached; a drunken speech on patriotic defense turned an entire nation at a key moment.
There are many ways to give victory to underdogs in the mid-20th century big fight; simply changing the schedule by just a couple of years would work wonders in many cases, and Keeler is a plausible ingredient in such changes. There are fewer ways to give enduring victory to nations that cannot match the production capabilities of the US and the USSR and do not possess comparable resources within their own secure national borders for the whole length of the conflict. But nobody speaks of endurance in the episode. Germans probably simply made a mess of Earth and rendered it incapable of playing the role it needed to play in getting the UFP founded. Kirk merely had his starship vanish - he didn't get it mysteriously replaced by Reichssternenschiff Bismarck, its all-Aryan crew on a mission to bombard new worlds and destroy new civilizations so that swastika flags could be planted in the ruins.
The question Shawnster brought up is an interesting one: how much of Spock's report on alternate history is speculation? Supposedly, Spock would have searched the Guardian visuals up and down when hoping to isolate the timeline-changing event; his research ought to have turned up solid facts on the subjects be mentions, such as the use of A-bombs at the tips of V-2s specifically, or Germany "capturing" the world. Would he have settled for spotting the timeline-twister event (by luck, early on in the search) and then leaving the following alternate history to mere speculation?
Timo Saloniemi