When it comes to fast-food it differs greatly on a restaurant to restaurant-basis. There is always "The good McDonalds" and "The bad McDonalds". We just got a new fast food chain where I live and I was all excited because I had eaten at one before when visiting relatives in Stockholm.
But it was nothing like the stuff I had eaten before, all soggy and all the meals tasted exactly alike despite they are supposed to have different dressings and stuff. Nor did they even remotely resemble the pictures above the counter. I bet we will have to wait a year or so until it becomes up to "chain standards" because the current staff is retar-.... inexperienced.
I find that the bigger the chain, the more similar its different restaurants are. It seems to me that a bigger chains are more corporatized, more organized, and have more rules and regulations that all restaurants must follow. I've never noticed any differences between different Mcdonald's, Burger King, Wendy's, Taco Bell, Jack in the Box, or In N Out restaurants.