Revelation isn't just the worst of the Fates trio, it's the worst Fire Emblem game, period.
*The story is a nonsensical journey strung together by one "shocking" revelation after another. Worse still, because this is seen as the golden route, Birthright and Conquest are effectively invalidated.
*Unit balance is a mess, ranging from flagrantly overpowered units like Ryoma or Xander, to lv.10 unpromoted units that can barely survive the maps they're recruited in, giving you little room for experimentation.
*The gimmicky level design and inconsistent enemy strength makes repeated playthroughs a chore