Greatest of Men

[Voralphion]

Huor was one of only two Men to make his way into Gondolin

Only two?? There were three men who made their way into Gondolin, Hurin, Huor and Tuor. In terms of all men, certainly Tuor would have to be higher than most people are putting him, he was valiant in the fall of Gondolin, killing many enemies, including balrogs, although I realise this was before the number was reduced. He was so great that Turgon allowed him to marry his daughter, and he ended up going to Valinor.

In terms of the third age, why is no one mentioning Isildur. Isildur was certainly the greatest man of the third age, it was he who cut the ring from Sauron's hand and it was he who managed to steal a fruit of the white tree in Numenor before it was destroyed, a great feat as he had to get past many of the king's and Sauron's guards. Sure he was corrupted by the ring at the beginning, but wanted to destroy it later on, (mentioned in the Disaster of Gladden Fields in UT). I doubt that anyone could have resisted the ring where Isildur obtained it, on the slopes of Mount Doom where the ring was most powerful.