Those guitar sounds really ruin it for me in the entire XIII series I don't know why. Maybe it's because they are over bearing whereas in other FF they weren't used as much, couple here and there, maybe more so in X
This was the first 'series' (XIII-LR) where we got a lot of non-hardware based music for once (actual recordings by live musicians). I'd expect more of the same in any of the games going forward, especially in the battle themes.