#1 Him versus Roman Reigns

It may have taken years, several failed pushes, a botched Royal Rumble or two, but Vince McMahon finally established Roman Reigns as the top dog in the WWE. The move was no easy feat, especially since WWE Universe resisted every single step of the way, but it became harder and harder to do so when he made Reigns a tweener.
Interestingly enough, when Reigns became a tweener in the months before SummerSlam of 2018, it became almost impossible to boo him. With that being said and Vince McMahon never giving up on Roman Reigns as his top guy and the leader of the company for the foreseeable future, it's obvious that this is his biggest accomplishment.
Think about it! Think how much McMahon had to overcome, all the boos he had to suppress, all the times he had to reunite The Shield and he finally did it! If nothing else, McMahon is a master manipulator when it comes to his audience and that is exactly why he should continue to be WWE's primary booker for the foreseeable future.
Becky Lynch has been challenged HERE.