If Rosberg wins the WDC this year..

[jens]

Will he be the least deserving champion of all time?

I can't think of another time where a driver has been so clearly inferior and won the championship due to reliability / other factors.

In my book Rosberg would be no worse than Button or Räikkönen, let alone several other champions before these two.

Also it is worth keeping in mind a very important differentiator in this argument. To win the WDC, Rosberg has to beat Hamilton in equivalent cars. It is a damn hard thing to do, even if you have the advantage of reliability. Because most WDC's have weaker team-mates to beat (the Barrichellos, Webbers, Coulthards, Bergers and Patreses of this world) and/or their closest rivals are driving inferior cars.