1) Sweet things like muffins or cakes are generally unbearably sweet to me in comparison to what I expect in similar products in other countries (Australia, EU)
2) The cultural integration of the consumption of these foods appears to be higher in the USA; donuts at morning meetings, krullers and bearclaws on desks and tables for all-hands, quarterly meetings, etc - feels very high given that I am working in a culturally and socio-economically comparable environment relative to my home countries.
Of course, commonwealth and european countries have their own culture-driven consumption patterns (cakes for birthdays, croissants, scones for morning teas in Australia/NZ/UK) - but it doesn't appear to reach a similar level of 'saturation' as in the US.
Just another limited anecdote, of course.