Just changed my mind. The speech should be said by everyone, GM and players.
Here's the text for the Comittee's version of history, depending on who wins:
Humans win: That the Dragonlords were a scourge upon the World, and the Yu-Men did clease it of their monstrosity. To them, let History give thanks.
Dragonlords win: That Yu-Men did oppress the World, and the Dragonlords did free themselves, and the World thereof. To them, let History give thanks.
Tie: That war is a terrible thing; that neither Yu-Men nor Dragonlord did survive; for blood is paid for in blood, until the end of time.