I think that HBK gets more credit than Razor for good reason, and is more deserving. When you think of ladder matches Shawn Michaels is the name that you think of, simply because he is the more memorable wrestler attached to these matches in many cases. While Razor of course had a part in the match, I dont think that he invested himself as much as Shawn, he did not put on as impressive a show as Shawn or put his body on the line to such an extent. The idea of a ladder match is what Shawn has always been about, it is a chance to display daring, athleticism and make your opponent look great in the process. The only problem with the ladder match was that Shawn did his job too well, and stole the show, not just from the other matches that night, but from Razor himself. In a ladder match environment there was never any doubt that Shawn would deliver on a larger scale than Razor, he did and he is remembered as doing so. This commitment has been a staple of HBKs career, he always talks about stealing shows and trailblazing new ideas and this is one occasion where he delivered on that promise all too well.
While issues such as company loyalty may have played a part in allocating credit for the match, I feel that HBK could have had that match with anyone. The ladder match was pretty much virgin territory here, so there were any number of spots and sequences involving the ladder that the two could have used. I feel that someone having a well regarded ladder match today deserves more credit than someone in one of the first matches, because it is much more of a challenge to come up with fresh ideas in a match that has been used so much, as well as the issue of keeping the audiences attention while knowing that they have seen huge ladder matches throughout history.
For newer generations to wrestling Shawn may be more easily remembered because he is still with WWE, and therefore more readily visible to new fans. For fans who remember this match however, Michaels is still the one who sticks out, and his career since then has only served to highlight this. The splash that HBK did from the ladder is one of the most replayed clips in wrestling history, and who remembers the person who was receiving a splash? Most of the time nobody does, and this basically summarises the whole match. Michaels in this type of match is a human highlight reel, and he was always going to be the one to stick out more for this reason. He put his body on the line far more than Razor, delivered more in the match and thus received the credit that he deserved, in my opinion.