Let's face it, they're both pretty damn bad. My vote goes for Julian, as Seans in my good books after doing a jolly good job of production/playing on Yoko's new album Between My Head & The Sky - That said, can he be forgiven for the crime that was 'Dead Meat' -
http://www.youtube.com/watch?v=IT2YTURFEWc
And need I remind you of what makes Julian inexusably lame?:
http://www.youtube.com/watch?v=mr7ea9Deu2s