Dunkin Donuts caloric content?

Before you say it, yes. I checked the dunkin website, and the database here.

Maybe it's just me, but the calorie count for a Medium Iced Mocha Swirl Latte with cream & sugar and whipped cream sounds very modest.

It just tastes so good--too good to be <400 calories-- and is my one true guilty pleasure. But I need to know the count.

Maybe I am being overly cautious, but if anyone could help me out here it would be awwwwwesome.

And am I the only person that questions the validity of some company's calorie estimates?