correct me if i'm wrong, but to me it seems litchi only has the corner game to apply a lot of preassure and dmg. she also has good zoning abilities and some defensive options but compared to jin, tao, ragna and noel she lacks both dmg and a solid midscreen preassure game. don't get me wrong... she got some pretty good mixups... i mean just look at her corner game, but all the other listed charakters can literally stick to the enemy, especially to those who lack defensive options. litchi kind of pushes the enemy away with her guard strings.
well that's at least the way it felt to me when i played her... and again correct me if i'm worng since my expirience with her is very limited.