Been there and done that....on gamefaqs arguing with people about FFXII back when it came out.
I have been through all that before.
First it was me, then others came on my side and we argued with the people who thought FFXII was the best FF ever made until it got so acrimonious and so brutal I quit gamefaqs altogether and left.
The people who love FFXIII don't care what reviewers say about it or that a lot of players don't like it.
They like it and that's all that matters.
The people who don't like FFXIII or who have what they believe are valid criticisms about the game won't listen to what the people who love it say either.
So all this arguing won't change anyone's mind one way or the other.What most likely will happen is that the mods will have to step in and close the thread and may end of banning the people who got into the worst of the arguments.
If you like the game fine.Keep it and play it.
If you don't like the game then don't bother playing it. Wait and see if Versus is more to your palate when it comes out.
That's my advice. You can do of course whatever you want.