The main issue with the difficulty of the game is the sheer number of options that the player can utilize from the outset of the game. I remember having an easy time with this game up until the end of it because all I needed to do was spam the Guardian Force command. Maybe if it had a more linear type of statistical system it would have fared better in the difficulty department. I think that, with time, most of the Final Fantasy games tend towards the easy side because of the sheer amount of people that understand its mechanics inside and out shortly after the release of the game. There are occasionally breakthroughs that occur to this day when certain aspects of battle mechanics or programming of the game open up with discussion.