To be honest everything from S-Tier to B-Tier is a win in my book.
What's more important than the strength of one girl is the overall synergy of the squad in my opinion.
About Cattleya:
I know we talked about it. Still unsure though.
It's tough. She still only has three usefull Abilities to be honest (Solar Gauge and all that stuff "sigh") but she came very very close to the power of BB and BB has barely managed to become a B-Tier Girl. Cattleya is more consistent in her Atk-Buff but has one less usefull Ability.
I still need time for that decision. BB is B- for me. Don't know about Cattleya yet. Either C+ or B-.
They are both Sweeper Rainbows with high Atk. Buffs for the whole group just like Maple.
Both of them get heavily outclassed by Maple in my opinion.
Maple has the better version of Skill.Act, consistent Atk-Buff (50% for the whole party without a condition like BB), 45 % Skill Damage for herself (which makes her hit three enemies for x4,06 Damage) and she has 45% Atk Buff for herself in addition to the other three Abilities.
Maple is in my opinion either one of the strongest B-Tiers (B+) or one of the weaker A-Tiers (A-). Also still unsure about that.
I often times question myself if i made the right decisions in my votes
It's hard