Cause Sheamus is over-doing the revenge part. When Mark attacked him backstage twice eventually Sheamus speared him back backstage to get his revenge. That should have put them on even ground to fight it out for respect like a babyface should do.
Instead they got Sheamus keep sucker punching Mark ESPECIALLY during times when Mark didn't do anything to deserve it. The tug-of-war when he loss and justHenry that was
since Mark was trying to win that fair and square. Then on Smackdown Mark LEGIT beat Sheamus in arm wrestling but instead of accepting defeat to rise above it he just
Henry again just cause he could and that's what bullies do... they hurt people just cause they can.
Some people don't let up. He got sneak attacked by a bully now he's about to give him a taste of his own medicine. It makes sense. You all talk about faces having no edge then when they do you bytch. The two biggest faces of the previous era were a$$holes, especially Austin. He stunned innocents all the time.