If it quits for real, you do NOT know you are sweating until you land. At least not in my two. For me, it felt like time slowed down and everything was crystal clear, like a yellow brick road appeared in my vision. OTOH, I fly a twin...
Not everyone reacts the same to crisis though. I can imagine other people totally freaking out and not having razor focus like you. And your don't really know what type of person you are until you're in it.