Either they mistakenly gave us all unsweetened iced teas, or McDonald's has seriously underestimated how sweet people will expect their sweet tea to be.
I think the latter because I can't imagine they'd want to post the nutritional facts for true sweet tea. I've seen it made firsthand; it takes an obscene amount of sugar.
(That tastes so good!)
A year ago on TTaT: The best kind of assholes