Who would win these fights? Robert Wadlow, Mike tyson, Anderon, Big show, Great khali

Who would win these fights in a real life right.

Anderson Silva vs The big show
Anderson Silva vs The great Khali
Brock Lesnar vs the big show
Mike...

Source: http://www.mmaforum.com/general-mma-discussion/106427-who-would-win-these-fights-robert-wadlow-mike-tyson-anderon-big-show-great-khali.html

Kimbo Slice Sugar Ray Leonard Sugar Ray Robinson Rocky Marciano