And if we want to deepen this discussion, the Personas in Revelations: Persona could be compared to the Espers in FF6, the big difference being that you need to make Personas. Personas could also be compared to the stands in JoJo's Bizarre Adventure what with the tarot card references. But, again, it's a case of taking inspiration from the influences and doing your own spin on it rather than outright copying it.
For some of the covers my band does, we're not above listening to other bands' versions of those covers, taking bits and pieces we like, then re-puzzling them to our liking. Like one band may do a really good riff on the verses but another band does a really good riff on the choruses, so we take the parts we like and make them our own.