5 WWE stars who've been more successful in rival promotions

#4 Inaugural Universal Champion Finn Balor

While he was almost always featured as one of the top stars in NXT, Finn Balor has spent the majority of his time on the WWE main roster in the mid-card. Even though Balor won the Universal Championship soon after his RAW debut, he was forced to vacate the title due to an injury the very next day.

By the time he returned, the landscape had changed, and Balor found himself a long way from the main event picture. WWE opted against reuniting him with Karl Anderson and Luke Gallows, even though the trio had a great deal of success in New Japan Pro Wrestling.

Balor still feels relevant when he dons the paint and assumes "The Demon" persona, but he was one of the best characters in professional wrestling as the leader of The Bullet Club. The group became so popular that, at one point, its merchandise was commonplace at professional wrestling shows around the world.

---

#3 Three-time WWE United States Champion Miro

Miro FKA Rusev was positioned as an important act at certain points in his WWE run, but he's taken his game to a new level in AEW.

The Bulgarian star started off as an unbeatable monster and had a run as the United States Champion until he dropped the title to John Cena at WrestleMania 31.

A few years later, he got the "Rusev Day" gimmick over with the fans and became one of the biggest merchandise movers in WWE. But the higher-ups opted against giving him the push he deserved.

During his run with AEW, Miro has managed to combine his monstrous presence with a dose of personality. His promos are incredibly entertaining, and he's now one of the most entertaining characters in professional wrestling.