Alonso is not worth 0.5 or 0.6 over Max or Ric. If the 3 of them went in the same cars and qualified all season , Max would be the fastest and I'd say Ric would be 2nd. Alonso may out fox Max and bring the car home more often but never in a million years is Alonso worth 0.5 over the red bull boys. More chance of that being the other way round.
Sorry if i havent understood your post correctly.