Hercules is found injured after having fallen from orbit. Investigating just how the heck that happened reveals that he'd been chasing down a Hydra plot, started smashing his way through the base he'd been lured to, and was finally beamed to a moonbase with a transporter that is okay for freight but will Tele-Frag anything organic. Well, he survived. And utterly obliterated the moonbase, using its final explosion to boost himself back to Earth. Where he only wound up needing a little recovery time after all. He basically was never in need of any help.
Captain America aiding Dr. Strange in a fight against an abstract transdimensional being and winning effortlessly. Harming the creatur's physical body did nothing as its primary form was more of an idea. Thus when facing an even greater idea (Captain America and everything he represents) the creature was vanquished. But even without knowledge of this advantage and knowing that he was most likely hopelessly outmatched by something that was giving Dr Strange trouble, Cap still charged fearlessly at the monster to stop it from harming civilians.