Why Joubert was so low?
Look at his Base Value. Also: general lack of quality, not a lot of speed or energy. It looked like his body is just refusing to comply now.

Why Fernandez was below Ten ?
Because he did a second 3salchow, already having had done three combinations. (But yeah, I don't think he should have been behind him if that's what you meant)
Except for two footed quad why Daisuke was below Fernandez and Ten? The most emotional skate of the night for me. And Abott deserved better.
He missed his second 3axel as well.
Making major mistakes in a program should have a mandatory deduction on PE and IN (and maybe CH). When a skater is falling all over the place then the performance and interpretation obviously takes a hit.
What if they don't take a hit? What if somebody gets up quickly and continues like nothing happened and moves in time with the music the vast majority of the time?

As always, no matter how strange the competition. at least we get interesting comments from fans, skaters, etc.