Definitely the least best of the three. While the action was great – it seems to have been so at the cost of storyline and performance. The plot was extremely underdeveloped and porous (What was going on with the relationship between Bourne and Parsons?) and therefore negligent of character development as well. Bourne himself seemed disconnected from his environment – mechanical and absentminded – which ultimately worked against sympathies. It wasn’t the worst movie I have ever seen, but it certainly wasn’t the best.