<p>Every time there is a crossover of two or more series there are troubles with power levels. Goblin Slayer is a human, a strong one but still a human, so while he could fight some low level monsters of DanMachi he would probably be dead if he went to the 5th Floor, so they needed to nerf everyone in DanMachi so that it wasn’t just Goblin Slayer being protected by Bell and his friends. Same goes for Date A Live but backwards, they hadn’t got to that levels in the anime but still have a far superior destruction power higher than DanMachi’s characters with that kind of black holes(I don’t know their name) and special abilities as stopping time.
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