Moore should be too skilled and savvy for the wild swinging Galento. There might be a flash knockdown or two, but sooner or later Moore's greater skillset will win out. Realistically Galento's only hope is a very lenient and blind referee.
Moore could really fight. His work rate was really good against Rocky and it was higher than Galentos output in the film we have of him. Tony was a rough mauling guy with a great hook who used his weight to drain guys inside. But it was really the high output of Rocky that beat Moore. I don't see this from Tony. And Moore handles a bigger mauling oaf like Nino Valdez and James J Parker. So it's more than mauling that will beat Moore.