Who wins?
The Last Olympian vs The Battle of the Labyrinth
The Last Olympian wins 100% to 0%. 11 more put them in the same row. From Percy Jackson Books Tier List. Pick a side.
DarkTaco3262 on The Last Olympian: the best finale in YA fiction, Luke's ending got me at 14
silent_noodle_1990 on The Battle of the Labyrinth: the most underrated book in the series
Percy Jackson Books Tier List: the full ranking