This is how I understand it. The calorie counters are only estimates. The information used to figure out how many calories may be used differently from one machine to another and by Spark. I would trust the one on Spark a little more depending on the treadmill you used. The counters on the equipment unless you are able to enter your weight only guess. A fit person at their "ideal" weight will burn calories differently than an unfit heavier person even though they both did the exact same workout. So unless you enter your weight into the equipment's computer it uses its programmed average. I may be wrong but I think Spark takes your weight into consideration, I could be wrong on that though.
What I do is use the numbers Spark gives me unless it is a large difference than I average the two numbers and use that. Hope that helps.
I've missed more than 9,000 shots in my career. I've lost almost 300 games. 26 times, I've been trusted to take the game winning shot and missed. I've failed over and over and over again in my life. And that is why I succeed. -Michael Jordan
| current weight: 256.6