check out nutritiondata.com
to see if they have a more explicit definition of what is included.
my guess is that spark's cooked also includes some sort of cooking fat, which your raw does not.
there is also variety in most things. and spark sometimes uses a generic average, and that can run high, especially if you make it a point to choose better foods, rather than whatever you grab first.
i've had baked potatoes go down 30% in weight when i bake them. they still have the same amount of calories, but they lose a lot of water.