Those who watched Identity and Supremacy should know the difference between Jason Bourne and James Bond. 007 is just a spy who can only rely on super high tech devices and never gets hit in cross-fire, on the other hand Jason Bourne can do amazing tricks with objects in daily life, e.g. create a bomb with a magazine + a bread toaster.
Similar to Identity and Supremacy, Bourne has to escape from the constant pursue of a ruthless CIA agency and its deadly assasins. This time he has to take care of his partners too, while watching out for possible enemies in the crowd, security cameras, local police, etc.
The trilogy has a satisfactory ending, with Bourne's real identity and how he was made to become a super-agent finally revealed. He used his knowledge of psychology to escape a final death.