I don't have the faction unused quickly accessible (meaning its just in my logged plays but not in my spreadsheet), so here's just my 4 player data:
# of players -Winning Faction
4-Human
4-Elves
4-Human
4-Undead
4-Undead
4-Human
4-Red Monsters
4-Red Monsters
# of players -Winning Faction
4-Human
4-Elves
4-Human
4-Undead
4-Undead
4-Human
4-Red Monsters
4-Red Monsters