Cowell's treatment of Ms Minogue doesn't really sit well - If someone with less clout (money/position) treated a lady like that, they could probably expect a bat in the yap.
Because of who he is, he gets away with it.
Dannii has always been a thorough professional.
Chris Evans once told me that she was one of the best people he'd ever worked with after she'd done a guest presenter stint on The Big Breakfast, thoroughly clued-up & totally switched on to ideas in the production meetings.
The three people she is working with right now, are pretty classless in all honesty, she works quite well with Holly on the X-tra factor, because Holly, Like Danni is a sensible, likeable lady without any 'attitude'
In ten years time they will both still have flourishing careers (assuming Danni wants one) but the other X-Factor 'judges' will have either retreated behind the cameras or become full time WAGS.....