I think its definitely fair to say Foreman would have stopped Tyson in their primes. I think back on the Ron Lyle fight and think that its possible for Tyson to hurt George a bit, but Foreman had already lost to Ali and didn't carry his invincibility cloak around him like he did in the Frasier/Norton fights.

However, Frasier vs Tyson would have been like either one of them shadowboxing their own image in a mirror. They both had wild lunging left knockout hooks and both came straight at you. I give the power edge to Mike, but i give the stamina edge to Frasier.

Those two could fight ten times with ten different outcomes.

As far as Tua is concerned, he was a fun to watch fighter with good power. Nothing spectacular though, his praise is REALLy born out of a desire from you, the fans, NEEDING another squat heavy-handed KO artist. The needing, unfortunately, does not make it so.