1. Their unique characters
And finally, the main reason why The Usos are the best tag team in WWE is that of their unique characters.
At first, The Usos sported face-paints and matching attire, paying tribute to their heritage. But as The Usos were progressing, it was clear that their face run was turning stale and boring as Vince McMahon and the fans wanted something new.
On September 6th, 2016 episode of SmackDown Live, we saw The Usos turn heel for the first time since 2011 as they had brutally attacked American Alpha. It was at this moment that everything changed for The Usos.
After they had turned on American Alpha, they were showing more aggression in the ring and during their promos. It was clear that this heel turn was something that The Usos were craving to do for a long time.
The Usos were clearly born and raised in the streets, and seeing The Usos bring their roots into their characters has created the most compelling tag team in the wrestling world today.
The phrase "Down Since Day One Ish" isn't just The Usos being in character, this is a phrase that is the reality for them.
There is no point in being talented in the ring if you don't have the character to back this up, and this was evident during The Usos' first babyface run.
However, they took advice from all their critics and turned their characters into something special. And for that reason, The Usos are evidently the best tag team in the WWE today.