How does Marciano beat

Nope.

 

My 5 year old nephew can pivot, 1-2, check hook, and slip.
How would Rocky beat him when he had the shortest arms ever measured on any man ever?
Also Rocky drank milkshakes after his fights. He wasn't disciplined as some old time nostalgists would have you believe.
He was a gluttonous sugar fiend and never picked up the tab at the restaurant.
When will people stop believing in fairy tales?

 

The underlined is true.