50/50 imo would be amazing fight, it would be like two kangaroos fighting IMO rather than any sort of brawl
In my opinion, Wlad wins. Wlad is faster, hits harder, has much better defense and better footwork. Wlad's has a better jab, better left hook and throws straighter punches. Lewis throws better uppercuts. Wlad is Lennox Lewis 2.0. It's just the truth. Wlad does everything that Lewis did better, other than the uppercut. Lewis was pushed to his limit many times in his career, even during his prime. Wladimir hardly ever loses a single minute of a single round. Lewis did NOT fight better competition either, so I really don't see how Lewis wins this fight. Wlad also has more experience, and finishes his fights more often.
Lewis has to jump on him early and turn it into a shootout, If he tries to box with Wlad he loses decisively I think. Wlad has the best footwork of any big man in the heavyweight division ever, not to mention that fast, Liston-esque heavy jab. I think Lennox pounces on him early and does enough damage on the inside and with his right hand to get him out of there though. Lewis by mid-round stoppage.
Would be a great fight. Neither guy has fought a guy like themselves, so we can only speculate. I would pick Wlad, 55/45.