It depends. Are you doing them for the same amount of time? Also, if you have been doing the Xbox for a month then you've probably got the moves down pretty well. If you just started the live class, it would take some time to learn the moves first, which could be slowing down the intensity for you. Do you feel like the two are on the same level? Live classes vary, depending on songs, moves, and the overall intensity that the instructor brings to it. I teach Zumba classes and I like my participants to be drenched in sweat when they leave. But that's how I like my workouts to be. I like intense. I have, however, been to other Zumba classes where I hardly broke a sweat. Each to their own!