Doomsday vs Wolverine's Hulk!!!
This may be the best idea I have came up with on here so far.
Superman decides its time to deal with Doomsday once and for all. So he travel the universes to find someone capable of eliminating him. Eventually he comes across 616 and meets Reed Richards. Reed comes up with the plan to expose Wolverine to a form of gamma radiation that will give him the abilities of the Hulk and enhance all his own to the same degree. Believing this form will be totally reversible. After turning Wolverine into a Hulk powered version they transport both him and Doomsday to a neutral zone where they can hurt no one. After Doomsday hits Logan once he hulks out for the very first time. Then after he is hit twice more as hard as DD can his animal rage and hulk rage merge making him snap in a way permanently making him his full rage hulk version. A side effect Reed never anticipated so both are in full bloodlust like they have never been before.
This is the latest versions of both Wolverine and Doomsday.
Who wins the possibly greatest smack down of all time?