Marciano's Power or Ali's speed, Which is better ??

Ali speed is much better. Ali is 6'3" 215lbs + and has the speed of a lightweight. He also has skill and a great chin. Marciano had overated punching power that was mainly used in prolonged fights against light heavyweights.

not even a doudt Ali.Plus Ali had a little power.

I'd say it depends on how determined rocky is tho because ali has been caught b4

To say that all Marciano had to do was catch Ali one time to knock him out is absolutely ridiculous. Where do you get something like that? I'll give you some names: Liston, Frazier, Foreman. If these guys couldn't knock Ali out, no one could. One thing that a lot of people don't realize is the remarkable chin that Ali had. Ali would completely dismantle Marciano. I don't know what Rocky could do to defeat Ali. His speed and superior boxing ability would completely nullify all of Marciano's offense. Now, don't get me wrong, I greatly respect Rocky Marciano as a fighter, but I don't think that he had what it takes to defeat Muhammad Ali, but that's not an insult at all, because I don't know if anyone has what it take to beat Muhammad Ali.

Man I wish they would have faught it would have been amazing

Ali > marciano by an uncountable margin period I disagree. I see it as being a very close and difficult fight for both Ali and Marciano. It could go either way. Most likely Ali by UD but I wouldn't be surprised if Marciano would win.

Ali > marciano by an uncountable margin period

Iv'e watched alot of both of their fights and marciano wasn't that slow and he was patient not like mike tyson or anything and also with all that power well ali would have to be careful but my point of view is ali would win because speed beats power, Look at artuo and floyd mayweather, floyd absolutely dominated artuo with straight jabs and hook and artuo could only get i think it was 10 punches in by the seventh round.Then again rocky could get lucky with that one shot and ali would be out for sure.

is this a trick question???? if these 2 had faught Ali wouls of punished marciano worse than he punished clevland williams & floyd patterson! Ali was the best & is still the best heavyweight to ever live!

All Marciano had to do was catch Ali with one shot to knock him out. That guys power was phenominal. 1 punch is all it takes. Ali didnt have a awesome chin either. But then again Ali might have not let Marciano hit him. Marciano would beat Ali in a match though. It would either be Marciano by KO or Ali by decision. MARCIANOS POWER IS BETTER! Have you not watched The Rumble in the Jungle? That alone is evidence that Ali had a great chin. Foreman was coming off several quick knockouts, including Joe Frazier (who he KO'd twice), and he threw everything he had at "The Greatest". Ali let Big George tire himself out, and seized the opportunity. George Foreman punched extremely hard approaching 50, that was in his prime. If your statement was meant to be serious, you should watch that fight... and don't say Foreman had no power.

Ali's speed by leaps and bounds... Ali would box circles around Rocky. I have a lot of respect for Marciano and his legacy, but the sport changed drastically from Marciano's era to Ali's era, and Marciano would've been a Light Heavyweight in Ali's era.

All Marciano had to do was catch Ali with one shot to knock him out. That guys power was phenominal. 1 punch is all it takes. Ali didnt have a awesome chin either. But then again Ali might have not let Marciano hit him. Marciano would beat Ali in a match though. It would either be Marciano by KO or Ali by decision. Ali did not have an awsome chin? That is the dumbest thing i have ever read. How many times did he get knocked out,NONE!! And he fought Liston Frasier and Foreman. If he got up from that shot from Frasier in ther fifteenth, he gets up from anything. And no way Marciano gets under Ali's jab like Frasier did. Ali dominates this one. Marcianos face turns to putty and gets stopped on cuts in the ninth.

All Marciano had to do was catch Ali with one shot to knock him out. That guys power was phenominal. 1 punch is all it takes. Ali didnt have a awesome chin either. But then again Ali might have not let Marciano hit him. Marciano would beat Ali in a match though. It would either be Marciano by KO or Ali by decision. MARCIANOS POWER IS BETTER!

Ali's speed was tested against the best group of heavies ever, Marciano's power wasnt.