He's not the world strongest man and the Samoan is going to defeat him.
Technically-Umaga Power-Henry
Mark Henry....only because umaga, Samoan pikes himself by accident......
In wrestling - Umaga In real life - Mark henry
i think Mark Henry would win because, Mark Henry could outpower Umaga, and whenever Umaga wants to punch him or something Mark Henry would just stand still like if nothing happened, and Umaga wouldnt be able to throw him to the corner, and Umaga would have a hard time picking him for the samoan drop, but if somehow he were able to knock out Mark Henry, Umaga might be able to win with the samoan spike, but highly doubt it...