I don't see the Sting/HHH match as a spit in the face, I see it as a last hoorah moment. Sting is old, everyone from the WCW era is old. WWF era? Old. As far as wrestling goes, alot of the old wrestlers are done for.
So for Sting, to come out and face HHH, and then have NWO come out and have DX come out, and pretty much have a dream match...it's a spectacular way to signal the end of an era. Now yeah, Sting COULD'VE won against HHH, but he's old. This will probably be his last real match. HHH can still fight, he can still have people up against him.
I thought it was great. A last hoorah for a 16 year old era, during those minutes it didn't matter what was happening, everyone was a kid again. Weak ending sure, but that's not what the match was about.