There are lots of pointless and idiotic statements issued by some posters here. But I would like to answer to one from powerpuncher that I found intriguing...

i used the CW example because you used it too. its a more extreme example. and im sure that arreola would admit that he would lose to ali. also, mike tyson has studied old fighters a ton and im sure that he would admit that some of the older fighters would beat him. i would be very surprised if he said that he was too good for all of them.
Arreola would know he could stop Ali. Any guy like Arreola seeing how Frazier managed to get Ali and trouble him knows that he would be far too much for him to handle. He's an inch taller and 30lbs heftier for a start. He is even more aggressive than Frazier with a much harder punch which he can throw in combinations too as opposed to Joe's single shots, has better footwork than Joe, is faster and has an excellent chin compared to Joe's glass one. Chris is brash and brutally honest and knows he would overwhelm Ali by comparison. And he is not dumb enough like Foreman to punch himself out.

Mike Tyson has gone on record before claiming that he thinks he could beat all that came before, as has Holyfield and even declares honestly that every fighter thinks they could have beaten the new guys once they retire but then goes on to admit that that probably isn't true because they are stronger and better trained today an have built on past experiences. He then mentions the Klitschko's are doing great.

But hey, what do the fighters know? Let's take the word of a sidelined historian from a bunch of years ago.

A quick look at Mike Tyson's physical presence, an assessment of his fights and style and attributes is evidence enough for me that none who came before Mike could have beaten Mike. No not Ali and not George either, or Liston and definitely not Frazier! lol