I disagree with the "axiom" because, let's say, someone took 2nd place three times, 3rd place twice, and 4th place twice. It's almost 100% certain that they will be higher than everyone else in the total sum of all stages. And they won't be able to claim the top spot??? :confused:
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You could calculate it like in Formula 1, where first place is worth a certain number of fixed points, second place is worth another, and so on. But, I guess, since there's already a rating for the race, you should focus on that, it's the fourth stage after all...