honestly, they've never had a good solid lineup
Didn't they have Phoenix, Yeah Yeah Yeahs, Kendrick Lamar, Passion Pit, Solange Knowles, and the requisite bunch of EDM all in one year?
EDIT: Another year had Strokes, Lupe Fiasco, Girl Talk, Walk The Moon, Crystal Castles, Cold War Kids, Ra Ra Riot, et al from looking.