Great list. All of the matches deserve to be on a "Greatest Matches" list of any nearly any kind. Maybe the order could be different, but wrestling is subjective. Personally, I would involve several different matches. Part of my reasoning would take in to effect nostalgia, and personal sentimentalism. So in terms of order, it's hard to say one person is wrong, because there will never be a straight consensus.
I think matches like HBK vs. Flair from Mania XXIV, the Triple Threat from WrestleMania XX, Shawn vs. Triple H from SummerSlam 2002, or the HBK Jericho Ladder Match could all easily be on the list. You could also put Bret Owen and Shawn Razor from WrestleMania 10. But it is what it is. It's just one website, one list. There will be many more list from many more places.