Highly doubtful. She could probably hang with and break even with Gladiator's son, but Gladiator would likely defeat her with minimum difficulty. Supergirl isn't nearly as powerful as Superman, not if we consider his top level performances in comparison to hers.
And deep down, he knows, he KNOWS that no matter how strong Hulk will ever get, he will ALWAYS lose to Superman 10/10 because he simply can't counter him.
Not only that, but Superman's young adult female cousin also beats Hulk 10/10.
And every time he posts otherwise, he knows he's lying to himself.
It wears a kid down.
__________________
“Perhaps this is the ultimate freedom. The freedom to leave.”
Between the crossover events where Superman AND Batman beat Hulk, and the famous Death Battle vids of Superman and Goku that make bigoted Pew Die Pie's popularity look like a drop in the bucket, is it any wonder poor Carvers brain is fried.
__________________ What CDTM believes;
Never let anyone else define you. Don't be a jerk just to be a jerk, but if you are expressing your true inner feelings and beliefs, or at least trying to express that inner child, and everyone gets pissed off about it, never NEVER apologize for it. Let them think what they want, let them define you in their narrow little minds while they suppress every last piece of them just to keep a friend that never liked them for themselves in the first place.