Nekron vs Thanos

Introduction
Sega: Death, destruction. The very things that could end life as we know it, but in the DC and Marvel universes, there is only one that values them above the rest, like Nekron, DC's embodiment of death and Thanos, the gravest threat to the universe. I'm Segakid451, and its my job to research their weapons, armor and skills to see who would win a Death Battle.