The idea of a temperary truce to destroy a larger enemy is a real world concept, just one thing Michael Rymer brings to this episode. The cruel methodology with which Cain demotes Apollo and Stinger (\"Captain Taylor\") to replace them with Starbuck, along the information that she marooned a civilian fleet, is meant to relay that she deserves to go, but that she also is pragmatic, in sharp contrast to Adama, who prefers to adapt his people are to current circumstances.
This episode also reveals how ruthless Laura is, and how self-serving. Granted, she genuinely cares about Adama, but she also knows that Admiral Cain is slowly stripping her of her own authority; hence, she pressures Adama to kill Cain.
The methods that both C.O.s plan to kill each other are indicative of how different they operate. Adama sends one person, who is loyal, and who may not make it out. Cain sends a squad to ensure the job is completed.