I’ve read that Hus failed where Luther succeeded was because of the invention of the printing press. Luther’s ideas were able to spread; Hus’s weren’t.
That and the Muslim horde. Hus preached that Christians could never fight in a war. Luther at first liked this angle, and included in his 97 thesis several swipes at papal attempts to raise money for the defense of Christendom. He even called Mohammed the chastisement of God, and eagerly awaited the destruction of Christian kingdoms. German princes who didn’t want to spend money defending others LOVED what Luther had to say, but when Islam threatened the German princes who aligned with him, he changed his tune on just how awesome Mohammed was.
Hus was also anything but a fighter for the little guy. In the medieval era, it became common for only the transsubstantiated bread to be offered to the laity. There were no “extraordinary ministers of the eucharist”, and it was quite awkward for a priest to juggle both the cup and the palate at once. The Catholic Church taught that both the bread and wine became “the body and blood, soul and divinity of Christ.” In places like seminaries however, where multiple priests typically said a given mass, it was quite easy to provide both “species” (bread and wine). So when Hus found his message more popular among the urban elites than the countryfolk, he started preaching that only the bread became only the body, and only the wine became only the blood. Those who ate only the body, he taught, were unsaved, doomed to Hell, and not part of the discerning body of Christ. As such, the ruling class, the urban elites, etc., were able to find that only they had the Holy Spirit.
What a despicable heresy! Thus, from the man who argued that no Christian could ever fight in a war, we also find the basis for Luther’s preaching that the poor and rural were worthy of nothing other than to be cannon fodder.
Luther learned from Hus not to go to their meeting.
Oh, and of course, the fact that he drove out of the University of Prague anyone who wasn’t Bohemian certainly made it easier for his ideas to spread in Bohemia, but earned him great animosity throughout the rest of Europe.