Why Oscar went to Kate?

Rating: Null/10 (14 March 2009)

I never believed that Oscar always went to the best is out there, but after watching "The Reader" I am still wondering what Kate Winslet did in this movie to deserve the Oscar for a leading role? other than having sex with a minor!
The 1st half of the Movie officially should be considered as Pronography or Adult movie as it shows very detailed aspects of having sex which would be unnecessary in a drama, showing them together half-naked in the bed would give the viewer the same understanding of their relationship, there was absolutely no need to go to those details. and in the 2nd half, she rarely had any strong play, a stubborn German woman who was ashamed of her illiterateness? even for the cost of her life!
Congradulation to Academy for its new definition of a leading role as a an actress!!! Sharon Stone should have received hers for Basic Instinct.