I don't believe either Singer/Songwriter genre is immune from the effects performance, production, and fan base. OurStage is really not a place to get an accurate accessment of your songwriting skills for these reasons: 1) A lot of the fans are clueless about the craft of songwriting - although they may vote based on how the song moves them - which would be valuable if they would be in the majority of voters 2) Singer/Songwriter has been a genre for a while on the Internet and many of these artists are touring professionals who have a fan base that will vote to support their artist rather than determine the best song.
3)OurStage is basically a performance competition. So performance and production will outweight songwriting much the same as a well produced and performed demo of a "better-than-average" song may have more appeal than a "rough" demo of a "great" song. But again, what really makes a great song? Isn't it the sum total of all these factors?

http://www.soundclick.com/Summeoyo
http://www.ourstage.com/profile/summeoyo1