If Wilder hits Ruiz Jr like he did DB, I cannot see Ruiz Jr getting up from that. However, he did take AJs best and got up like It was nothing. God If Ruiz Jr became the undisputed heavyweight champion of the world since Lennox Lewis... Imagine.
WBA: https://www.apnews.com/d6d738cd1f0c400a83fcaa993d7b3159 WBC hasn’t been “virtually silent” before this, actually voting to allow the unification with Joshua over mandatories recently, before Joshua lost: https://www.badlefthook.com/2018/10/9/17956492/wbc-rules-to-allow-joshua-against-fury-wilder-winner
It would be an interesting fight. You have a skilled smaller heavyweight who throws nice combinations and has a very good chin against a bigger heavyweight with absolutely no boxing skill, a very suspect chin and a big right hand.
Wilder has skills, limited admittedly against Fury, Ortiz etc but he does forget them when he gets someone going....which is exactly what Joshua did against Ruiz & look what happened there ...
Lewis was never the undisputed heavyweight champion. Ruiz or Wilder would become the first champion ever to hold all 4 WBC,WBA,IBF,WBO belts.