From the above interview promoting the match:
"This match was very important to me and very interesting because it's a match that nobody thought could happen. It's a lot like Floyd Mayweather and Conor McGregor in you take two huge stars from two separate places and put them in a match that nobody thought could happen. So, to me, it's exciting for me after 27 years of being in the wrestling business, it's exciting for the fans both in New Japan and worldwide, and I think it gives Kenny a whole new aspect of his career."
He’s not necessarily wrong that it’s similar in the sense that no one really and truly believed Mayweather vs. McGregor would happen until it did and you could argue the same for Jericho vs. Omega. But that’s just about the only way it’s similar.