Maybe not, but more complex and certainly more retrospective than say... Santino.
Both brothers were complex people in their own way.
Santino was definitely a complex person in that he had a personality that consisted of emotions and impulses that, while knowning that they were wrong to act on, he allowed to influence his behavior. Santino was built on taking impulsive actions based on his emotions.
Fredo on the other hand was complex in a different way in that he had terrible feelings of guilt because (as pointed out in a post above), he realized that he was unable to protect his father, and he felt guilty when talking to Mike in Cuba, knowing that he was ignorant enough to be fooled into believing Ola and Roth, and that he betrayed his own brother.
So in truth I don't think that you can really say that one brother was not more complex than the other, or that one was a complex person and the other wasn't. Both were complex people in different ways, for different reasons, under different meanings of the word.
Don Cardi
