I can't say I agree with this. I'm a long term FF fan, and felt that it was a phenomenal game. While I feel the FF series was strongest in the SNES run, I felt that XII took a brave and creative approach to the combat system which turned out to be excellent, one I easily found to be the most enjoyable in the entire series. The story was quite enjoyable, and it was probably the last RPG that I played in an endurance fashion, completing the game in roughly a week. I've always been the type that enjoys a game most for the story, and felt it was lacking in no way or felt out of place. If it helps give an idea of where I'm coming from, the FF that I found the worst by far to me was VIII, having an utterly contrived feel that made me eagerly await the release of IX in order to have a sense of credibility regained.
Don't get me wrong, i freaking loved that game (except troll boss yiazmat, omg! his hp is finally getting low! lol jk reflect). But in comparison to the "good" ff games that ff fans generally like to love, there are a few differences.
The biggest differences are the characters and the overall mood of the story. FFX can stir emotions in a way that FXII can never hope to touch. FFX had romance, tragedy, and general human interaction that appeals to a personal level while FXII felt like it was all politics and ultimately lacking that "magic" that makes older FF games emotionally attaching. I could get into the specifics, but that would take too long. But basically, FXII kinda felt more like a western rpg, than a JRPG.
And of course there are those hardcore fans of the turn based system, but i personally don't like that. I liked how FXII minimized the "staticness" of the turn based system myself.