I assume you played IS before that, though? It's not like that knowledge doesn't carry forward.
Yeah, but only the fundamentals (which are quickly taught to players in the tutorial). Boss strategies, contacts, and Persona fusing were things I had to relearn on my own. Relearning fusing in particular was somewhat troubling, since I couldn't coast through the game with the initial Persona like in IS. I actually ended up fusing a lot "cool-looking" Persona that were pretty crappy, haha.
But in spite of all that, I still thought the game as a whole was moderately easy. Almost entirely due to the broken fusion spell system. I'm tempted to replay through EP without using fusion spells at all, and seeing how it would work.
EDIT: I guess I should add an addendum to my original post and say that P4G is probably easier than P2:EP. P4 had some particularly nasty bosses early on (Shadow Yukiko, Shadow Kanji) that were neutered in P4G, and Persona maintenance was a lot harder.