I really feel bad for Dunst, really i do. Sure she came off as a whiney, man-crazed ****, that seeks the approval of anything with a swinging ding-aling because of the poor relationship with her dad, but that's the way the script was written.
My problem with Dunst in SM2, and especially SM3, is that she looked a total ****ing wreck! I mean she looked and dressed terrible. Her hair, her clothes. It's like the make-up department had to make cut backs because of all the cgi going into the movie. Dunst looks o.k but i think casting her as MJ was a matter of saving Sony money, rather than getting a good actress.
Btw, i'm all for Cuthbert.