Silver Surfer Superman Crossover

When Superman was Galactus’s herald in the DC vs Marvel crossover, How powerful was he…?

was he as powerful as Silver Surfer..or more..

Title of Book SuperMan Fantastic Four by Dan Jurgens
Reed Richards said , Galactus has infused him with the power Cosmic , Coupled with his own abilities would make him the second most powerful being in the Universe

World of Heroes – Teaser Trailer