I love AJ. I'm a Styles mark all day every day and have been since like 2008 but I don't think he has had quite the year Sami Zayn has had in terms of pure performance. Here is a quick list of PPV's in 2016 where Sami Zayn had the best match on the card and was a major reason for why it was so good.
1. NXT Takeover Dallas - A perfect match storytelling match with fantastic in ring work, Sami really pulled it all out and in turn Shinsuke Nakamura gave it all as well for what is in my opinion the best WWE match of the year.
2. Wrestlemania 32 - the ladder match which he almost single handedly carried in my opinion, really bizarre to say that when Owens is also in the match but all of the spots were Zayn's and he did some incredible stuff and got the crowd behind him very fast.
3. Payback 16 - The first of his awesome PPV matches with Owens, even for the tame affair it was intended to be it still was the best match on the card.
4. Extreme Rules 16 - The insane Fatal Four Way with Miz, Cesaro and Owens which once again Zayn was the key player in it and came out looking like the best wrestler and in favor of the crowd.
5. Battleground 16 - The incredible match with Owens. This was the epitome of WWE storytelling and psychology in a match and it was perfect. Zayn and Owens tore down the house on fucking Battleground of all shows and then guess who isn't on the Summerslam main card. *Sigh*
It could also be argued that his match with Jericho at NOC was the best match of that PPV. Despite constantly being forgot by WWE creative post draft and bound to be absolutely squashed and buried by Braun Strowman in the coming months, Zayn has proved time and time again why he should be a contender for not only best wrestler in the WWE but best wrestler in the world.
TL;DR: Sami Zayn is like the best dude.