What may be slightly relevant is which judge gets which category. Cheryl Cole has never had the groups or the oldies. And when Cher came along you just KNEW that she was gonna end up with Cheryl. (BTW....didn't Katie mess up at the auditions as well??).

Well I think Simon and Louis are essentially businessmen so I dont think theyre as emotionally involved as the girls. So they are more happy to take the weaker categories and fight against the odds. Its probably a challenge for them. Plus Louis is essentially a group manager so he's very used to dealing with those dynamics.

For the girls dealing with so many people in groups may be a bit much possibly. And the older acts less willing to take their advice. But essentially I think they are indulged a little and given the younger acts they can relate to more. Makes it more enjoyable for them and Im sure Simon and the producers want to keep them happy.