Well, surely you have know that it goes down to individual preferences. But comparatively, unit 13 is not as finely made as the dissidia. But unfortunately, graphic wise, unit 13 will have a little more advantage.
It's Meego. I dare you, windows, I double dare you!
Unit 13 is a good example of what a half decent rushed game can be like but I find my self playing dissidia more as in i played unit 13 mabby 10 or 12 hours but dissidia has around 60 hours into it now
As for me i don't like dissidia that much, i have play it before and it did not catch my eye that much,but i been playing unit 13 ALOT,even know the game is not let say 3d wise is alot of fun the AI is pretty active and it will make you think twice before you move.