The Islamic world was much bigger and more urbanized, with more wealth and cultural patronage, and more ethnic and linguistic diversity. Whereas the cities of western Christendom had populations measured in the thousands—Paris and London would have had maybe 20,000 each—Baghdad likely had hundreds of thousands of citizens.
The broad Muslim perception of Europeans was as cross-eyed barbarians. There were clichés that got repeated up until the 19th century—usually about their lack of cleanliness, the fact that they defecate in the street without any sense of privacy.
https://www.history.com/news/why-mus...rom-christians