But now you are changing the topic. Your question was quite simple, "what's more heroic" and the answer is quite simple and it is not really a subjective answer. I wasn't saying what I would like to see, I was answering your question in a fairly objective fashion
So objectively Superman is more heroic if he is willing to risk the lives of innocents by wasting the SECONDS he has to stop Zod from flat out murdering people becuase he stop time just so he can feel go about himself.
Because that what the "there should have been another way" complaint boils down to.