How does Inception keep losing "Best Picture" at these award shows?

According to the IMdB "Road to the Oscars" poll, it is the favorite to win by a landslide. BEST PICTURE: Inception 41.6% The King's Speech 17.8% The Social Network 15.8% Black Swan 13.4% Toy Story 3 3.1% True Grit 2.6% 127 Hours 2.3% The Fighter 2.0% Winter's Bone ... show more According to the IMdB "Road to the Oscars" poll, it is the favorite to win by a landslide.

BEST PICTURE:
Inception 41.6%
The King's Speech 17.8%
The Social Network 15.8%
Black Swan 13.4%
Toy Story 3 3.1%
True Grit 2.6%
127 Hours 2.3%
The Fighter 2.0%
Winter's Bone 0.9%
The Kids Are All Right 0.5%

If it is voted the 8th best movie of all time by AVERAGE MOVIEGOERS and voted favorite to win by such a large percentage in the Oscars poll, than why does it keep getting beat by The Social Network? And how come Nolan wasn't nominated for Best Director?!
Update: The Social Network was the most pretentious movie I've ever seen in my life.
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