Alucard with Schrodinger means he can't be perma-killed by normal means. But in exchange he lost nearly all of his other vampiric abilities. The Nobility (vampires in VHD) are virtually inseparable from the technology they wield, and often times their powers are either of their own design or science at work, which all ends up being Standard Equipment anyway. The things they can and have done are pretty op. Get into Valcua, SANs and such and we're dealing with 4th-dimensional laws.
it just boils down to Alucard vs D again and D wins that 10/10