After nearly three hours of a mostly dull Monday Night RAW, the night ended with something exctiting and surprising. Seth Rollins attacked his Shield members and joined Evolution.
The problem with this is take a look at what has made Seth Rollins a star in WWE. Take a look at during his time in WWE when he was the third wheel in the equation. It's the same reason RVD, Rey Mysterio, Jeff Hardy and guys like that don't work as heels.
I give a simple, in-depth explanation in this 2 minutes on CineSport video.