But the poster's comments aren't entirely untrue - the game does feel like a bunch of movie scenes strung together with a 15-minute walk through a narrow hallway punctuated by fights in which you fight one of three configurations.
The prophet said that this game was FPS-inspired and a lot of people laughed at him for it but what he says does have a lot of truth to it. The story pacing, especially, reminds me a lot of an FPS game rather than a traditional role-playing game.
I mean, someone's going to jump down my throat about what a "role-playing game" should be or should not be, but I think it's safe to say that in almost every Final Fantasy game, the story starts out simple and localized, and eventually grows such that you explore the entire world and fight a battle in which (usually) the entirety of civilization rests in your hands. This style of story is consistent with all of the main-series Final Fantasy games that I've played. In contrast, many other role-playing game series (ex: Suikoden, Ogre Battle, Dragon Age: Origins) end up with stories that are more localized - the story doesn't affect the entire world but rather a single country or city.
As a prerequisite in almost all of these RPGs is some aspect of "world development". Exploration of the world isn't really there to add replay value or to make the game longer, but serves the important purpose of letting you learn about what the world and its people are like. You walk around a town and view the surroundings and see things, watch people go about their business, and learn about their plights.
Final Fantasy XIII lacks these "learn about the world" experiences. You do get a few opportunities to look around and see what "the world is like" but they're not really that frequent.
In contrast, a game with a very similar design, but different presentation is FF X. It also has very similar dungeons but in between you get the traveller posts in which you talk to people and learn about what they think of Yuna and the summoners. You get to look at the town of Besaid and even explore the big city after a few hours into the game. By the time you're almost done the summoner quests you have a pretty good idea of what the ordinary citizen thinks of Yuna and her importance to the world.
Final Fantasy XIII does a lot of "telling" - the game tells you what people are like in cutscenes. Final Fantasy X does more "showing" in contrast, where you find out bits and pieces, and, the more time you spend in the world the more chances you get to piece together what's going on.
So I think what Lunar says is applicable even if you disagree with what he suggests with the term 'Anti-FF'.