There’s not a damn thing Wanda can do to Clark, even with speeds equalized. Even that feat of her crushing Thanos, it wouldn’t do shit to Superman, as he was able to withstand the World Engine trying to crush him—while he was being weakened by it terraforming the area around him into a new Krypton.
All the while, Clark still has heat vision and arctic breath to use on Wanda at a distance. And he still has flight and is just plain massively more powerful than her. And she’s still a glass cannon. A finger flick would kill her.