I'm comparing it to fresh sandwiches from Barcelona, Budapest and Zürich.
The last one is important, because there's a huge protectionist tariff on beef in Switzerland, so McDonalds is either buying super cheap import meat or using local. (And my guess is that they are not importing, it's simply noticeably worse.)
McDonald in Switzerland is more expensive and often worse than comparable stuff in France, living here near border (Geneva) so had plenty of experience. Many better and healthier options are simply not there in CH menu.
You really see they squeeze every bit of quality to have the cheapest menus possible (I guess due to high CH wages), but at the end they cost the same as normal restaurant with lunch menu offer, so only desperate or not-so-smart people go there when there is competition (after 10pm situation is different unfortunately).
The last one is important, because there's a huge protectionist tariff on beef in Switzerland, so McDonalds is either buying super cheap import meat or using local. (And my guess is that they are not importing, it's simply noticeably worse.)