Here's what I found: the formula given in the article is "calories burned = BMR x METs/24 x hour"
But the METs for lying quietly is 1. The author certainly forgot to subtract 1 from METs in that equation, and could easily have also forgotten to do so when calculating the given numbers.
It just wouldn't make any sense to tell people "you burn X calories when walking/running/whatever for an hour" if they had to subtract their base metabolic rate from the number.