5 superstars that need to retain their titles at the Greatest Royal Rumble event 

#5 AJ Styles

AJ Styles needs to retain his title.

Shinsuke Nakamura is an awesome heel in WWE's generic pool of heroes and villains. Instead of WWE commonly taking everything fans loved about “the king of strong style” and turning it into heel material, they chose to let Nakamura be more of himself.

Therefore, some could argue that Nakamura is more engaging, charismatic and entertaining than AJ Styles at the moment. However, while that might be the case, WWE cant pull the trigger on a WWE Title reign for Nakamura now, as they need to build his heel run more and more until it finally peaks.

Therefore, while WWE is creating the perfect heel in Nakamura, AJ Styles is still the best champion in WWE today and needs to carry the belt for a long time before he drops it.