Personally I disagree with everything Tarkatan said besides Green Arrow and Atom. She either beats Fate or it's even. Starfire will come out ahead if she just uses 1/4 of her trait at a time and lands often. If Fate wants to just duck forever then you can just dust, and dust into trait or dust into another dust is a mix up.
I think she loses pretty bad to Beetle, Hellboy, Manta, Darkseid. Supergirl is probably 5-5 now since it's dumb for Supergirl to deal with her being -1 or -2, with the d1 nerf. Superman and Flash definitely lose to Starfire like that's not even debatable to me. Bf2 is just such a stupid move vs those characters. They can be hard to anti air but you just gotta space them properly.
Posion Ivy probably doesn't lose as bad as Ivy's say, but I doubt it's tricky. If she puts bark skin up she still can't do anything without taking trades.
One of the best reasons to use Starfire imo is that she goes 5-5 with Black Adam and Catwoman. I don't think Starfire is all that overall but she does do fine vs these two character, that are super relevant in the meta. Vs Catwoman just find the sweet spot where you can d2 her jump ins. You want to be right outside the range of jump 1, and where you can low profile her jump 2 enough to get your d2 off. Don't use dust a lot because Catwoman is small and really fast. Optimize your whip trip punishes and what not.
Black Adam can get frauded out a lot by bf2, also black magic is punishable on block by trait. You can read lightning preemptively with a jump and trait. He's hard to anti air though, like he'll just jump right through b2 and db3 no matter how well you time them sometimes. Make sure you're punishing f12 properly with a d1 juggled into a 113 or 21.
It was mentioned at the end that Bane is at a severe disadvantage which is not true at all imo. I also understand that there aren't really too many good Banes so I could understand the misconception. He has arguably the best forward dash and meterburn roll in the game, which are very effective against duck trait/star dust mind games. Punishing his overhead is really annoying since the patch, and he can just bulldoze your wake ups and armor through numerous gaps that are typically non-existent.
Even if you think Bane loses after playing Bio which is the only Bane in my mind, there's no way Bane is worse off than characters like Captain Cold and Green Lantern, or even joker.