So, following the post on the James Allen website,
http://www.jamesallenonf1.com/2013/12/insight-hamilton-and-rosberg%E2%80%99s-head-to-head-at-mercedes/, I think it is worth considering this rivalry further, and whether it has any bearing on the relative reputations of both Lewis and Nico.
For me, Nico's reputation has been enhanced, while Lewis' has tracked sideways. For reasonably large percentages of the season Nico has looked faster than Lewis; in general Lewis has an outright speed edge, but it is not definitive.
I don't consider this a slight on Lewis as such, but I must admit some surprise at the results thus far. Perhaps Lewis really is taking a while to settle in and next year the edge will grow?
That being said, I'm not sure what to make of Lewis' reputation relative to his performance versus team-mates. In his career thus far he has not shown himself to be definitively faster than anyone barring Kovalainen. Within each comparison period you would conclude he is quickest over a lap, but has some frailties beyond this measurement criterion. And yet, he has a HUGE reputation, that doesn't really correlate with his results.
Anyway, next year should be fun to watch what with all of the properly competitive teams involving driver personal changes.