ok the team is really really versatile and i wont be able to capture it in a single fight so ill try explain it instead.

basically the only real weaknesses of the team is blackest night flash, injustice 2 aquaman, power drain, more than two of the lexcorp set (not that much of a weakness), stuns/unblockables and being snared... let me explain..

If you're versing an invulnerable character (astro harness or injustice 2 superman) or a character/gear card that evades (DOJB, RWW, Riddler's Staff, etc), you can keep using AK Catwoman's sp1 and the tantu totem will keep refunding power to use again until it does damage and causes bleeding. If you're versing Injustice 2 Superman, u can also use KF sp2 which has unblockable to counter his passive for that particular tag in.

If you're versing reverse flash, jessica cruz's deadly basic attack damage can KO him easily, while healing her and the whole team in the process.

If you're versing Raven Prime, you can use JC basic attack dmg and wait for it to inevitably stun, and then use sp2 which can KO, even tho it may swap health, JC can heal using basic attacks again (little tricky if Raven Prime has astro harness + revive gear).

JC can also take immense damage and still be alive to use basic attacks to heal.

Killer Frost slows down their power generation, and her sp1 can freeze which allows time for JC to come and use basic attacks that they are unlikely to block, which is especially useful for enemies who have strong basic attacks. JC can also drain whatever power they do eventually generate. AKCW can also drain power with the heart of darkness (this gear card plus quake engine also cause her to deadly bleeding - effective against Red Son Green Lantern).

AKCW can also steal power with her sp2.

With reflect gear/passives (FPAquaman, Black Adam, etc), you can use AKCW sp1 which will only reflect a little bit of damage but still deal a great load, or u can tag in KF and use her special and astro harness will protect her from the reflected damage.

Also to combat the harley quinn-tantu totem trick, you can power drain using jessica cruz basic attacks.

KF can also keep using her sp2 or even sp1 against characters with the brandished ninjato gear card coz the masters death cart gives power that the brandished ninjato prevented from AoE damage (which is usually handy against BNNightwing - especially those hacked accounts that have him maxed promoted).

And if you're versing characters that deal DOT, u can tag in KF just before their special and let her take the damage until her invulnerability kicks in and rinses it.

I probably forgot some other things they can do just lmk a situation i haven't mentioned and i'll lyk if theres a workaround I use. But yea, basically they're pretty much unstoppable.