The thing you're not factoring in is the style and activity of fights evolved rapidly since the Peter Jackson draw where they had a lot of rounds where both of them barely engaged at all they would've both gotten DQd for passivity in the 15 round format of Joes day. So when you're forced to actually engage (something Corbett struggled at) it becomes apparent he would've gotten destroyed in under 5 rounds. I Like Peter Jackson a lot and believe he could've changed his style to be a good fight for Louis but there's no film of him it's hardy to say. We've all seen Corbetts film he has a terrible/Limited offensive game he is among the most overrated champions of all time.