Don't think that's true for the treble winning season. In the important games it was mostly Boateng who stood out, while Dante played the more flashy but not the better season overall. Dante started incredibly well in 2012/13 but already started to fade towards the end of the season. He tried his best to cost us the CL final while Boateng excelled for example. Since Guardiola took over it isn't a contest anymore.
There's no way Ramos had overall the better year, Ramos made plenty of mistakes in the league, was shit at the World Cup. Pepe was clearly the better defender at Real and Ramos' key contributions were goals after set pieces in the CL semifinal and final. I can't think of a single dominant defensive performance from Ramos in 2013 actually, Boateng had plenty against quality teams. Godin is a good shout, but that's difficult to compare with Atletico and Bayern/Germany having a completely different approach to the game. I sure as hell wouldn't want Godin instead of Boateng in the high defensive line Bayern and Germany play, that would be a mental decision.