I've seen Twinleaf a lot as damage dealer but never Bush Clover. I'd say Bush Clover has more consistent damages but Twinleaf can hit harder with luck or buffs. I think Twinleaf is better overall. You have to rely on luck but with her better possible damages she can get kills Bush Clover can't. On Bush Clover side, she is avaibale with R-medals or 6* tickets but Twinleaf is not. That's a good point for her.

Speaking of good girls, I like the new event girl. She is a good free support and may replace White Tulip in my Tritoma team.
Also, White Tulip's flower family buffs found a use with Choco Lily swimsuit. Having free 150% crit damages is not bad. And they're both from Lily wood for a potential base core for Lily Wood Wolrd Flower girl whe she will came out.