WB is a waste of space, it's pointless, the vocals sound grotesque, the beat is beyond repetitive and it's the most meaningless song.
applause is nothing special, there's never a wow moment. and even if the lyrics are special to her, no one can relate to that song. it's fun though. very mediocre--she could've done better.
roar is catchy, has good lyrics that EVERYONE can relate to, is uplifting, and fun and has the best vocals out of the three (even though you can't even really say there are "vocals" in WB.