I don't think that it ruins Marciano, but I also don't think that he would have been as well suited to it as Patterson.
At the end of the day Marciano ended up in the perfect Trainer/Boxer marriage IMO. An in depth read shows a lot of things fell nicely for him and it's quite likely some trainers would not have recognised what he brought to the table and refined it in the correct way. He may not have even been coordinated enough to master Tyson like mechanics and patterns.
I don't think it would contribute to Marciano's score, resume, legacy... being better than it was in the real case
Terrifying to think how much greatness goes unpolished and unrecognized because of contextual inability to recognize it. Stories of the greats are very often defined by men who took them in and hooked them up with the right people to hone their skills with.
I always thought...what if Tyson had been born across the country in Los Angeles instead of New York city and thus had never crossed paths with Cus D'Amato. Would Mike Tyson have got into boxing and if he had, would that trainer had recognized his talents and invested the time into him?
