For one they are much larger in size, which is the whole argument here. They do civil engineering and public transport better.

They have much more tradition. Having been to many on both continents, the ones in the Americas are much more of a money grab than a celebration.

In Europe it's a bunch of people standing by stalls eating their favorite seasonal/traditional food listening to music and chilling around with family, not buying local goods/stuff. That's for tourists.

In the Americas it's long lines of people, moving them through and out of the market after they purchased outrageously priced common food items slapped with some sort of german/chistmas/winter spin to it. Minimal decoration and theme to call it a Christmas market.

I'm not European btw

For one, Christmas markets in countries that traditionally do them are significantly larger. The largest ones in the US would be a mid size one in Berlin.