They brought Sting in just to make him look like a fool
So he wanted to rid the WWE of The Authority, but he ends up shaking HHH's hand after losing. Which would have made sense if HHH made a face turn, and repented of his old ways. But then 30 minutes later HHH is right back to being a dastardly heel looking like he spent the entire night chilling watching the show from a sky box. And not to mention the commentary during the match made Sting look even more like a clown.
"WCW loses again"
It's not that serious bro. Don't know why he shook his hands but that's neither here nor there.