You've bought into the myth. You truly believe they were extra-human. But then you were likely weaned on Cronkite's socialist-praising pablum.
No, just that they didn't care what the cost was. We could have bombed the dikes, flattened Haiphong, nuked them back to the stone age and they still would have fought. What position were we in? Locked into an alliance with a country that really didn't want to fight. Why should we fight if the ARVN didn't?
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You got that right. Some of the birds here are repeating every piece of leftist propaganda that was compounded for the occasion. You can tell them that, but it won't make a dent because they think they're brilliant intellectuals for having accepted what they were told.
Actually the Viet Cong did pretty much fight to the last man. They were just about wiped out after Tet. However, you also had all those NVA troops also willing to fight to the last.