Marciano would draw more.

- White
- Heavyweight
- Hit Hard
- Had that ugly brawling style like Hatton that casual fans oddly seem to like.

It would have been no contest imo.

Although, it depends how SRR was built up and the state of the heavyweight division if Marciano was in it. For example, we don't see Wladimir Klitschko outselling Floyd Mayweather's PPV's..Although the missing ingredient is that Marciano's fights were probably considered way more exciting than Wladimir's are..

Quite a few variables - I'd personally watch SRR all day long over Marciano