Cool But not as my expected

It is awesome for its car chasing scene and fancy curving bullet shoot , but the story plot is a little bit not logical. Suddenly, his bro appears, and Angelina Jolie actually try to kill him in the train, but help him at the end and suicide.Why?http://watch-free-movies.org/movies-links/movies/2008-movies/wanted-2008.html Feel it by yourself, Watch wanted English version.