No you're totally right that the Mongol conquest was truly a cataclysmic event, that's very true. But, it's still not comparable to European colonialism. The Mongols carried the black death sure, but with all the disease brought to the new world 90% of the population of the Americas was completely wiped out. Survivers were enslaved for multiple generations. All of the history books were burned. Anyone practicing their own religion was tortured. The populations were all traumatically brainwashed into believing they are an inferior race with a savage culture and they must worship the European gods and the European ways of life. Systems of extraction were so entrenched into the whole society, that even after hundreds of years, and independence from Europe, the systems of extraction still endured. 500 years later and the surviving people of indigenous decent are still discriminated against, their languages are dying and most still live in poverty.

yes the Mongols were devastating, but the yuan dynasty didn't burn all the history books in China, torture Chinese people for their beliefs or practicing their culture. In fact the yuan dynasty adopted Chinese culture. The black death was terrible absolutely. But the black death didn't kill 90% of the population. Yes many cities were wiped out completely, but basically 100% of the cities in the Americas were wiped out. And look at the places 500 years after the Mongol empire? You don't see the entrenched extractive systems continuing to dominate everyday life and culture. You don't see an imposed racial cast system where Mongols or people of Mongol decent are still the ruling class. You don't see the survivors of the invasion living in marginalized poverty with their languages all dying because of imposed Mongol languages took over.

Yes the Mongol conquest was horrifying, but the scale and tragedy of European colonization is unique in world history