Yeah I don't know what is is. McDonald's coffee is pretty good. People make cracks about them but honestly for the price and the speed they usually have a pretty good product all the way around. Not sure what's up with their tea though. It tastes like paper.
In the south sweet tea is sweeter than other places. Sometimes very sweet. Since I drink it unsweetened I always check before I walk or drive off. Sometimes they give you what you need, not what you ordered.