#1. Beating Randy Orton will be the second-most significant win of Drew McIntyre's career

Drew McIntyre's two most significant career wins came in 2020. The first was his incredible Royal Rumble victory and the second was his win over Brock Lesnar at WrestleMania 36. While it took place inside an empty arena, there's no doubt that the Lesnar win ranks as the most important win of his career.
Drew McIntyre has had a few great title defenses so far, overcoming Seth Rollins, Bobby Lashley, and Dolph Ziggler ahead of SummerSlam. All title defenses have been solid matches and have done well to establish his legitimacy as the WWE Champion.
Not that he needs it to legitimize his title reign, but beating a legend in Randy Orton when he's at his late-career peak would be the second-most significant win of his career and the most significant title defense he's had so far.
Randy Orton has truly taken it to another level these past few months and having McIntyre beat him would further establish his top babyface status.