Sazh is an interesting
Commando because of his two pistols. Each shot does less damage than other
Commandos, but he gets twice as many, and they seem to build chains slightly faster as well. His
Random: Instant Chain Ability also seems more likely to go off. (As you can see, I have a lot of certainty about these things...)
Sazh's biggest advantage is his
Blitz attack, which hits many times over a very wide area. However, he lacks some of the basic attack enhancing
Abilities, such as
Ravage and
Blindside, and is the only one of the four
Characters with
Commando as a primary
Role that lacks the
Launch ability. Against any enemy where
Launch is vital, such as Behemoths, this basically means
Sazh can't be your lone
Commando.