Really now? They're complaining about a final battle being hard?
It's a final battle for some reason. What fun is there to simply waltz through it. FF online has always been about battles increasing in difficulty as you progress through the storyline. (Exception off CoP, that one kicked people's asses from the get-go lol).

Something else that is a bit random. Games as of late have really dissapointing end battles or simply none (looking at you ME3!). I for one am glad that S-E is keeping up the tradition that a final battle, should actually feel like one.