#3 Either outcome is great for business
One of the best things about this match is that it is impossible to predict the outcome of the said contest. Had the match been between The Undertaker and, let's say, Ricochet, for instance, we would have known that the latter had no chance of defeating the legend at a stage like WrestleMania 36.
And the same could be said for a match between say, AJ Styles and Triple H, which is enormous in its own right. Triple H is just too selfless an individual, ever since he's assumed the reins at NXT, to let a full-time member of the roster lose to him at a stage like WrestleMania.
But a match between The Undertaker and AJ Styles is just impossible to call, and the best part is, neither person winning is necessarily a bad call. If The Undertaker wins, AJ Styles will be slotted right back into the mix again and can go about business as usual.
And if The Undertaker does not win, he'll be putting over a man who can carry the torch for years.