The biggest reason this match will deliver is the raucous crowd in London. It is not unreasonable to expect this crowd to be as insane, if not more so, than the rowdy Raw crowd of a few weeks ago.
An awesome crowd can make a good show great. A bad crowd can make an average show terrible. The energy of an arena feeds the wrestlers and makes the entire event feel different.
And with The Undertaker making his in-ring return to Raw, it will definitely generate a buzz with the crowd. But once his music hits, the crowd, which may well go berserk all night, will go absolutely insane.
After all, England does not get TV tapings too often. Expect the fans in attendance to take advantage of the opportunity. And expect Fandangoing. But that's another story.