pretty much any defense that someone uses will be called a meta by people who lose to it, I mean of course people are going to use the most effective formations for current madden. if you didn't use the ones you named you could use tampa 2 or cover 4 drop and those would easily fit right into the meta theory as well? there are only so many combo's in the game? cover2 cover3 cover 4 man? what else you want people to run? that's how football works.
pretty much any defense that someone uses will be called a meta by people who lose to it, I mean of course people are going to use the most effective formations for current madden. if you didn't use the ones you named you could use tampa 2 or cover 4 drop and those would easily fit right into the meta theory as well? there are only so many combo's in the game? cover2 cover3 cover 4 man? what else you want people to run? that's how football works.