Point 1;
Two men with a lot in common.
Brutal power, Unbridled aggression and a menacing aura made them perhaps the two most intimidating fighters in history.
(I'd put those stares before even Dempsey and Hagler.)

Therein lies the advantage.
Both thrived on the fear they could instill in opponents.
Every fighter feels nerves and fear before they fight.

George Foreman said that his knees were shaking when he stood in front of Joe Frazier.
He didnt show it. Their first fight was a grotesque display of power. Foreman's power.
Tyson's psyche was less concrete.
We all remember the story of him crying before his am fights. In his entire career Tyson never beat a fighter of the golden era calibre.
(Holmes was well spent and Spinks wasn't a HW.)

When nose to nose with the much larger Foreman how would Tyson react when faced with a man just as "bad" as himself, void of any fear and with nothing but bad intentions.

Point 2;
People often forget that George could box.
He has often expressed regret that he is remembered as the slugger outfoxed by the Greatest. He actually aspired to box like SRR or the Cassius Clay that beat SL.
He is rarely commended for his Olympic Gold Medal. not easily won.

If that arguement fails me;
If James Douglas had enough power, Foreman could have done the job quicker.