WrestleMania has been a spectacle since its inception in 1985, but it didn't grow to be WWE's most premiere pay-per-view of the year on its own; most of the event's success can be attributed to the Superstars who have headlined it. From the very first main event of Hulk Hogan and Mr. T teaming up against Roddy Piper and Paul Orndorff to Randy Orton defending the WWE Championship against Batista and Daniel Bryan at WrestleMania 30, marquee matches have always been major factors in an event's prosperity. Once a marker for how well a show was received before the days of the WWE Network, a PPV buy-rate was a huge indicator as to how big of a draw a specific Superstar was depending on their spot on the card. Additionally, their involvement significantly increased interest in the event, whether it was Hulk Hogan, The Rock or even John Cena. In the WrestleMania universe, some star power has been more important than others in terms of the bottom line. Each of these biggest icons' drawing power will be determined based on how big their respective role was and still is at The Show of Shows, along with their ability to score a big enough buy-rate.