I am still a newbie relatively speaking.
But based on the components which seem quite similar, I would go with the 2011 for the resale value AND, in general, Cannondale/bike makers tend to improve on the frames every few years so that the frames are stronger and lighter but at a lower or same weight as before.
Another thing that you can do for your research is that you can call Cannondale and talk to their techs about the 2 bikes. Ask them which bike they would choose and why. I did that when I had a choice between a Specialized Amira 2012 and a Specialized Amira 2011 at the same price point offered to me (both bikes with Shimano 105 components).
2014 Liv Lust
2013 Specialized Fate Expert with carbon wheelset (sold)
2012 Specialized Amira Elite
2010 Santa Cruz Juliana with R kit and Crampon pedals (sold)
2011 Specialized Ariel Sport,suspension post,Serfas Rx Women's Microfiber saddle (sold)