MA-22 v. Premium BB?

Does anyone know of any significant (or insignificant) differences between Takara's MA-22 "battle mode" BB, and Hasbro's "premium series" BB?
All the pics of MA-22 look like the Hasbro stock photos of premium BB... and we all know how accurate those can be
All the pics of MA-22 look like the Hasbro stock photos of premium BB... and we all know how accurate those can be
