What is "normal'? I use frozen oven-bake fries. You don't add oil to that, so they'd be pretty close to your machine.
However, if you're comparing to deep frying, the calorie difference is in not absorbing litres of oil with it while they cook.
The oils we deep fry in aren't usually the heart healthy oils we need to eat, and in a serve of deep-fried fries would be more oil than one should have in a day anyway.
Deb, in New Zealand