Well... it's more about how many interesting permutations there are, not really just about length or quantity for the sake of big numbers. In other words: it's not about "look how many puzzles there are" it's "look how many INTERESTING puzzles there are"... which may seem like a small distinction, but when the claim of the puzzles being "interesting" is true, and being said in a genuine non-marketing way, it means a lot.