The best pattern of organizacion for a literary essay comparing and contrasting two characters is 4. logical order.
By doing this you will be stating step by step representation of the ideas you want to articulate. Following a logical order you can present the specific traits you want to compare and contrast and the logical conclusion that can be extracted from them, going from the specific features you are contrasting to reach more abstract conclusion. Thus, the reader participates in the reasoning process so he or she can follow the essay easily and be convinced.