Why not? You already beat the game and are going back through it with your levels and everything the same as when you finished the game. There's no challenge there except to find endings you haven't seen before or push yourself to level 99. I honestly think it should be the next step after the end of the game and become harder and harder to match your level for consistent levels of difficulty and challenge. I mean, it's great getting those one-hit kills in; but I'd much rather have stuff my level to fight that's more of a challenge and gives better exp points, etc. And, of course, you should be able to unlock newer weapons and items, etc. that weren't available the first time through. (like Ayla's bronze fist at level 99; I mean, who really goes through and gets to level 99 the first time they play through the game? There's a new game+ for that, after all.)