This season could be interesting if Hamilton wins the final race of the season and Rosberg finishes 2nd or 3rd as you would have the unusual situation where the driver with most wins during the season isn't champion. Hamilton would have 10 wins to Rosberg's 9.
What I want to know is has this happened in previous seasons and can you give me some more detail?
I am aware of 2008 when Hamilton won the title with 5 wins to Massa's 6 - but Hamilton actually won the Belgian GP that year but was given a penalty that handed Massa the win, so you could argue he won the most races that season. Or at least he saw the chequered flag most times.