Why 'Avatar' lost big at the Oscars

Avatar was really a great science fiction epic film even though the story is predictable it got the attention of many people in the world. So why those it get so much attention? Is it because it was directed by James Cameron who directed the movie Titanic or is it because it has been develop for to long which began in 1994 ? Avatar gross for about 2.5 Billion surpassing the gross of Titanic for 12 years But why avatar Lost big at the Oscar? The answer would be simple actors and actresses are afraid of the feature. However unfair it may be, it seems no one likes the idea of being replaced by a machine.avatar is the feature of movies. Human evolve so as the technology. Avatar is the feature of art in movie industry and no one can stop it.