Erm.
Franchises in different countries have different standards, product types and quality. Sometimes this is a business decision, sometimes this is physical constraints - you can't get a reasonable supply of good local beef in my country for example, but we use cane sugar not corn syrup, so there will be some taste differences.
I've had Mcdonald's in China. It was not pleasant. Australian Maccas however wouldn't have been much out of place in any neighbourhood cafe.