they are the best on last decade until now :deal but at the same time they both have not face the best fighter in their era, themselves :bart remember bowe throw a belt into trash can to avoid lewis? would you say he is the best in 90's? :yep so that's exactly what klitschkos are doing they both duck themselves :hey and if you still does not get it : if there were five of them would you say all of them are ATG? :tired as you can see now they are different fighters, they both had strong and weak points, and they choose to fights those opponents they can look better against, so we will never know how would one of them look against those who fought his brother not him :good
Even though you don't like them they are ATG's because they are so damn dominant so damn good.. Like it or not they are in the books.
Wlad doesn't have to fight Vitali to prove he's been the best heavyweight post-Lennox Lewis. Neither Vitali. They are brothers FFS. Plus, there are many cases in heavyweight history were ATGs didn't fight the next best fighter. Dempsey never fought Wills. Louis never fought Ray. Holmes never fought Page. Tyson never fought late-80s Holyfield. Lewis never fought Byrd or Wlad Klitschko. And one more thing: in those cases, brothers were not involved.