Plus you can't buff them with any resins or spells. I think the Drakeblood Greatsword has physical, magical, and fire which sounds awesome in theory, but gets boned by the mechanics.
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Your powerlevel is exponentially higher than that of the enemies' boost. You might notice a difference later on, but probably not. The only other point of NG+ is to get a few different items and rings for the achievements. But unfortunately, as far as I am aware, enemy placement is the exact same which is kinda lame.