If Scarlet Witch is able to unleash a huge dose of her powerful Chaos Magic in a fight with Superman, it could be enough to completely stop Superman, even if it's just for a few moments. This will give Wanda a chance to land as many blows on him as possible before he is able to recover.

Is Scarlet Witch stronger than Superman?

Despite the fact that he has bested several magic-powered foes in the past, Superman has no real defense against the Scarlet Witch. While Wanda's human form could allow Superman to best her in a purely physical fight, her ability to alter probability and use magic inevitably puts the odds in her favor. Sorry, Superman.

Is Carol Danvers stronger than Superman?

As far as strength is concerned, Superman takes the winner spot. Captain Marvel operates at her full strength at all times. Having a constant power source is a good thing. But Superman can increase his powers by charging his body cells for longer under the yellow sun.