I was just curious if there was really a difference between the knights from CoK to DQoK. All I see is the xp and nothing really else in the books.
Crown and Sword are capped at 18, Rose can reach 40.
Note, however, that Sword and Rose are effectively identical at any given level, Sword levels significantly faster, and the additional levels available to Rose barely materialize in practice (due largely to the severe lack of training opportunities in later DQoK resulting in most of the XP gained being dumped to the "can't level more than once at a time" rule. Expect a Rose Knight to only get to 20-21 by the end of DQoK).