Isn't that though the very power Supes used on manhatten?>
Yes! Frankly the whole Doomsday Clock series major theme was an homage to the Superman and his being the foundation of the comic industry to this day. It also makes a case that such will be the case in the future both real world and industry. Superman is shown as the original and important figure in that light. That last point could certainly be argued because Batman universe has become the centerpiece starting back with Dark Knight and Burtons movies. I do not know what D.C. was doing with Bruce Wayne as he came across a bit slow and even foolish about the idea of due process for Rorschach. Heh-I just realized Doomsday Clock shortened to initials D.C. This was just one of several themes of the series.