1 Magi,. have you seen what these guys are capable of in the manga lately.
2 and 3 are close but I say One Piece
3 Naruto I only have them as 3 because One Piece is only half way done so they will be stronger by the end.
4 Fairy Tail. They are a strong team but I don't think they have the same fire power level as the top 3. If Gildartz was in the group they would be #2.
5 AOT, I am fairly confident that the top 4 could take this group down.
6 Team Rocket, no explanation should be needed.
I want to read the Magi manga. I'd started the anime but didn't get far at all.