If you throw in semi-classics, then I can't see why wouldn't we count podiums of the 6 Monuments. I mean isn't a 2nd place at PR or Liege bigger deal than a GP Quebec?
We all watched Paris-Roubaix recently. And now I should award Colbrelli with 2 points, but Vermeersch and Van Der Poel gets "nada". Meanwhile Jasper Philipsen gets one point for his Eschboorn Frankfurt win...
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It's simple, we count only the biggest wins, or if we count the smaller ones, we also need to count highest placings in the big ones.