I don’t mean the rating of the puzzle itself, that can make sense to reflect the difficulty of that puzzle. I mean in the stats of a player. The puzzle “rating” of a player doesn’t reflect at all a player’s real strength, so those numbers are more confusing than anything else imho. A complete different thing is puzzle rush, specially in a limited time control. There’s no “rating” number given there after a run, simply the number of puzzles achieved. But that number of puzzles achieved does correlate proportionally to a player’s real strength.