Well lets see. He lost to Dante when Dante was at a very weak stage,he didn't even have his DT and Dante toyed with him. He was too weak to break the chains around him so he could fight Dante some what at his best(even though he had a special attack that allows him to leap forward with a good distance). That seems pretty weak. Beowulf pushed Dante to his limits and almost KO'ed him. I'm pretty sure I was right when I said Beowulf would probably win. But I would expect Cerberus to be weak. Hes the first guardian of the tower.