Personally I don’t think Martin has the tools to trouble Marciano much, he likes a fight, has ok boxing, but relatively average and not exceptionally athletic. Maybe he scores a flash knockdown at most if he’s lucky, but I think based on the styles, he gets slaughtered, Martin succumbs around the 7th, Martin would be forced to fight, Marciano would get chest to chest, destroy the body, land uppercuts. Martin doesn’t have the feet to stay away or the timing to consistently time Marciano with hard punches on the way in, he had ok power and that’s the only part that could give him success, which would be, at most, a flash knockdown, he doesn’t have the combinations to finish him. He’d get under Martin’s average combinations and close the distance consistently due to Martin’s average foot speed, then he’d tear him up on the inside.