I wouldn't say that they are copied from Underworld which is not really an "original" movie. Vampires which have wings have been used in multiple things like the http://images.dakkadakka.com/gallery/2011/12/30/309847-Sword,%20Vampire%20Lord,%20Warhammer%20Fantasy,%20Winged.jpg from Warhammer.
If you are gonna say bethesda ripped off something AT LEAST get the source material.
They ripped off the Bram Stoker's Dracula movie's true form Dracula which is what Underworld and Van Hellsing (movie) ripped off. (it even looks more like Bram Stoker's take on Dracula's true form than how Underworld and Van Hellsing made it look)
If anything its not a rip off anymore.
Its become the actual appearance of a modernized Nosferatu.
People just like to complain about everything.