Peak Tua TKO6 in a crude slugfest. :!: Tua has much better power & a much tougher chin. If the fight was between Past-Prime versions, Lyle should out-box a fat plodding Tua.
Lyle would stand to win a decision over Tua. Ronnie could win ugly if necessary and could forsake the temptation of slugging it out, ala his win over Bonavena.
I'd pick Tua. Both would take bombs, and Tua has the better chin and would survivie this armageddon more safely. But I'd be rooting for Lyle.
How do you figure Tua had a better chin? Wait because he stood toe to toe with the highly overrated Ike Ibeabuchi? When Lewis banged him he got scared and tried to avoid being hit. When Lyle got hit by Foreman he kept fighting like a man.