I think a lot of it will depend on how much effort you're willing to put into learn it, and I mean that in the least condescending way possible. For me, X's combat has been a chore up to this point (I'm on chapter 6 currently), and a lot of that has to do with the fact that the combat is based less on things like reaction time and avoiding attacks and more on just keeping track of what your various arts do, where they're most effective, when to use them, and how to use them in conjunction with the rest of your team.
The game doesn't really explain this beyond a simple "make sure you're not just spamming your arts mindlessly" prompt at one point, and I've gotten along just fine without putting too much thought into things (at least, not counting the times when the odd level 50 enemy spotted me), so it's something you'll probably have to put a concerted effort into learning. The game doesn't really force you to learn the ins and outs of its system, and there doesn't seem to be a real tutorial for it, so the initiative will be all on you.
