Everyone wanking Overlord and downplaying D&D using game mechanics tends to miss the part where Ainz, with full prep at his strongest, still admitted that he can't beat the likes of the other Supreme Ones, even the ones who are more unga bunga than hax-focused like Ainz (especially the unga bunga boys), let alone beings from the New World. Even with game mechanics in the setting rendering him as OP as he is. Meanwhile D&D's signature lich villain with full prep and at his strongest fought the Lady of Pain to a standstill. Lets ignore the part where it was mentioned during said fight that the Lady of Pain was capable of destroying the multiverse by appearing in her true form. Lets also ignore the part where Vecna was stated by this point to have reached a level of power on par with the Serpent, which itself is considered an overdeity on the same level as Ao and the Lady of Pain. We're ignoring all of this because Overlord wankers are so unbelievably intent on using in-universe game...