It depends on the food and what/how you do it.

I didn't say you are going to get the exact same thing but at the same time you are getting better quality still. At least in the USA nearly every single place is using SYSCO so you are getting the same garbage anywhere you go, it's just dressed up differently.

You have to also take into account if you "made it the same". When you are not doing prep and meal planning you tend to make things larger than what you would get out of something from a to-go place.

Stuff like that can be an outlier, you might only need three slices of tomato for a sandwich but you're still buying the whole tomato. Making sure you utilize the food you buy in different ways until it is gone helps.