That showed true grace under extreme pressure.
Supposedly Grissom was to be "The first man on the moon".
Maybe.
Armstrong was certainly "worthy".
Grissom was indeed supposed to be the first to walk on the moon, even after the controversy of him supposedly blowing the hatch on the Mercury or Gemini capsule.
Your assessment is correct. I flew with Norm Crabtree when he was Ohio's director of aviation. He had flown with Armstrong and said he was one of the best. I knew Scott Crossfield, in Virginia, who agreed. Armstrong was outstanding in every major assignment, starting with the X-15. And he was "cool" about it.