technically it was just one part timer. punk thought a triple threat could work. but it wasn't needed.
brock vs Goldberg cancel out each other. Unless someone wants to argue why they get to fight on the biggest stage. and it's cuz money.
There was also Batista. He had just come back to win the Rumble over him and was penciled in the for the WM main event. That was probably one of the final straws. He didn't like putting over Lesnar at Summerslam either.