You know, I felt a little sorry for Joffrey here, mostly because he looks like a boy, still. All the comparison with Robb Stark and his bravery leading his men etc etc seems a bit unfair since Robb Starks is a man, and Joffrey is a boy. (At least that’s how the characters look on the show, I’m not sure how old they are supposed to be, but Richard Madden definitely looks like a fully grown man in the way that Jack Gleeson does not).
I love how Tyrion’s speech is not about honor and glory, or loyalty to the King and country (he knows that ship has sailed, with Joffrey basically running away from the battle) – it’s about the people protecting themselves and their own families. When all else fails, appeal to self-preservation, heh.
“Don’t fight for your king, don’t fight for his kingdoms, don’t fight for honor, don’t fight for glory, don’t fight for riches because you won’t get any. This is your city Stannis means to sack, your gate he’s ramming. If he gets in, it will be your houses he burns, your gold he steals, your women he will rape. Those are brave men knocking at our door. Let’s go kill them!”