Like we've said before, anything is possible... We can't agree or disagree on theories, and that is fact
He could indeed be... A super weapon
I already gave my view on the DB...
Hopefully Vergil is alive, and Nelo Angelo is just some of his powers encased in armour? Yet trapped in that armour, so that Vergil couldn't use all of his strength whilst fighting against Dante. We all know that after his corruption, Vergil was weakened... Yet, some power still lies inside of him, if he is alive... And some power would still remain in Nelo Angelo. As the Bianco Angelo's are made from pieces of Nelo Angelo... Maybe someone just decided to create some sort of super-human... Like, it was an experiment, and Nero was the one to have a huge piece of Nelo Angelo infused in his arm, and that is what gives him the ability to bend the time space continuum, because it's like his arm is another being/person... And of a different power altogether. And almost like the arm becomes him, and in a sense he gains a demonic side when Yamato reacts to the DB, which it would react to if it was Nelo Angelo And the Nelo Angelo power would be Vergil's power, and he is a son of Sparda... Thus, the part of Nelo Angelo could perhaps contain some of his power/blood, and in effect the Devil Bringer gave Nero Sparda's blood after it was infused?