I think he would definitely win by KO or TKO against that tough but extremely skinny Croatian guy. I think Povetkin might have stopped 214-lbs Mavrovic too.
You know Lennox Lewis is roughly AJ size right and couldn't knock out Mavrovic and neither would AJ. If anything AJ would probably by the one getting knocked out.
But, using that logic, Lennox Lewis couldn't KO or even slightly hurt Levi Billups, so no one else wouldn't be able to do it? Wait, Witherspoon, Sanders, Jeremy Williams, Vitali and even cruiserweight Orlin Norris not only knocked him out, but did it in a brutal manner. And there were plenty of fighters (5 exactly) who KO'ed/stopped him too.
Pity Mav got sick and had to retire. At the very least, he likely would have been involved in some decent match televised matchups had he been able to continue his career.
Thats 1 fighter. So using you're logic, AJ is way better, more powerful, and more proven because LL disnt knock out Billups, when LL KO'd far better fighters than anyone AJ has even fought and even though LL has a much more proven and greater resume. LL is an ATG HW who avenged his only 2 losses over a long and very impressive career. AJ hasnt even fought someone his size with some ability yet and went life and death with two past it non-atg's. LL never would have struggles with any version of Wlad let alone an inactive 41 year old version coming off a loss.
Prime Wlad vs prime Lewis would be 50/50 fight. Probably 51/49 in favour of Lewis. Pre-Steward Wlad knocks out pre-Steward Lewis cold. Both were reckless, but pre-Steward Wlad had great balance while pre-Steward Lennox had an awful balance. Even Steward himself said Lewis balance was terrible when he started working with him.
So because his balance was better he would win? Anytime Wlad faced ANY opposition or adversity he caved and lost. He also had a straight glass chin, possibly the pinnacle glass chin and LL was a HUGE puncher. LL had an underrated chin and durability with great resilience and always went head on into a challenge. He would have worked any and every version of Wlad. Period