Copied from the FAQ
"Will there be a ratings phase? Yes! Although the idea of one particular game 'winning' the jam doesn't really make sense, we thought it would be good if you could get feedback on your projects. This is good for both very long running projects and new game devs who complete their first game. There will be ratings for Fun, Visuals, Audio, Mood and Innovation."
FFSJam ratings arent really about competition