#2. AJ Styles has come leaps and bounds in his promo ability

Remember in 2016 when AJ Styles' biggest weakness was his promo skills? Sure, he was never exactly the best promo, but his time in WWE, if anything, has seen him massively improve his promo skills and character work.
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And this is exactly what separates superstars like Styles from the rest of the batch. He knew very well that WWE is very promo-heavy and character-based, which is why he focused on improving on these aspects of his game.
The segment with Seth Rollins saw him show an intense side of himself and his promo was absolutely fantastic from start to finish. The subtext of lines such as "I'll do anything to get the Universal Championship" showed his abilities and it's evident that his promos are no longer a hole in his game.
Given how rapidly he improved and listened to higher-ups, it's no wonder that Vince McMahon pushes him as hard as he does.
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