Frank lacked the chin, stamina and attention span/concentration for the full 12 rounds needed to bust up fatty. He comes close but eventually takes a few heavy lefts and does the old Rope-Quality-Control test and gets stopped.
Well, we are matching him up with a man who historically collapsed against punchers His defining victory a close decision over a head-case with as much self confidence as I have melanin
McCall doesn't punch as hard as Tua and at their bests Tua is more agressive and throws more punches. McCall doesn't do to Ruiz what Tua did for example. McCall may have knocked out Lennox Lewis with a one in a million punch but besides his ridiculous chin he wasn't all that good.
I'm not sure if Bruno was any better than Maskaev, he might, at his best, have been better than that version of Maskaev, but if we are talking prime for prime, then we have to assume that Tua eventually find and nails him. Bruno always found a way to get tired and take punishment on the ropes. Even his win over McCall was a life-and-death struggle.
Tua wins definitely. Bruno might control it early and hurt Tua too, but Bruno was very hittable, didn't have the best chin and he lacked stamina. So once again, fat guy beats the trimmed one and thus breaks another piece of HutHut's world