I think Cactus looks kinda pale is due to her active skill doesn't have drain effect. And it's weaker than Sakura/Mei with only 4x but that offset with chance to attack twice. Her raw stat is even lower than Anemone. The other is shine crystal drop skill. Many people don't like this skill unless you play solar nuke team. Her skill activation is crazily high. however. With 46% at max lv. and with enough skill activation boost, she can use it one after another.

Dendrobium is good as sweeper but her value dropped in super strong boss fight or if you can't finish off enemies in 1 turn, since her 2 skills will be shut off.