If there were such a thing who would beat everybody!?
*Disclaimer* No Rouseys allowed, we all know what she's capable of under the right circumstances. 
Johnny Bones.
Cain Velasquez.
I honestly think his bad performance against Werdum was due to ring rust and elevation.
An in shape, fight ready Cain is going to maul anyone in front of him. 
One of: Bones, DC, Cain, Rockhold, Werdum, or Stipe.
Bones and Rockhold due to lanky and versatile. DC and Cain for grinding style. Werdum for subs and better striking than most give credit for. Stipe for power and movement
2015 Ronda Rousey for sure
Jones. Like it or not.
The Reem, lol
If only we could actually find out...
BJ Penn!!!.........Duh!!!
- The UG
Bones and Velasquez would be the favorites. Cormier is a contender and Overeem/Stipe/Gustaffson the darkhorses.
Mark Hunt.
Brock Lobster - Cain Velasquez.I want to believe.
I honestly think his bad performance against Werdum was due to ring rust and elevation.
An in shape, fight ready Cain is going to maul anyone in front of him.
Thought this was a no brainer... Its Jones all day for me
Jones
CM punk
Jones.
With ease.
Mighty Mouse
A few months ago people would have been claiming McGregor had a shot. My how things change quickly.
Nate Diaz
Steve jenum