when your comparing boxers from today to boxers from the past you've got to add/take-away all the modern nutritional benefits. in joe's era lewis would be about the same size he was at the time of the ruddock fight.
i agree with louis's ability to fight lewis inside, but i think if lewis boxes like he did against holyfield he'll win
While Joe Louis can never be counted out of any fight id give the edge to Lennox for the sheer size difference because Lennox was a very skilled fighter as well...but then again Evander wasnt that much bigger than Joe...