We have a few old-timers' auto-bios available for free. If you start comparing their descriptions of their own bouts to next-day local reports, you'd be on my side as well.
If I had to bet I'd say Battling Nelson to outwork Griffo, possibly stop him late. But I wouldn't be surprised to lose my bet.
I've never watched Griffo fight. Sounds like a Willie Pep type though. Maybe more like a Mike Gibbons who is just about the nicest style of boxer I can ever watch. I can't make an opinion on his talents without watching though. For shame.