I had to rage quit this game because it is FAR too easy to get a low match rating. I got a rating of 3.5 and I was 2 for 2 on my chances. That should not happen. When you start to do bad, the boss makes you a sub, resulting in fewer chances, and more low match ratings, and you just get worse and worse. It's a viscious cycle! The match rating system is completely ruining the game.
Actually finalfantasx, if you know how to play the game well, there are no advantages. Someone with high ground can be easily hit with nuke or a shatter mortar directly underneath.