The UFC heavyweight championship is considered to be the most prestigious championships in all of Mixed Martial Arts. Sure, the UFC has done a great job in terms of elevating other titles in importance, but the reality is that the "heavyweight" tag adds a certain prestige to it. It also helps that there weren't too many interim champions in the last few years (though there were a few over a decade ago).
Either way, from Mark Coleman to Daniel Cormier and beyond, the title has always been to decide the baddest man on the planet. Packed with power, the heavyweight title has switched hands more often than you think, with Stipe Miocic being the only champion to defend the title on 3 consecutive occasions.