Soreness is no way to gauge the efficacy of a workout. You should only be sore if you're not conditioned. Once you adjust to any new exercises, routines, or amounts of volume, you won't be sore. This isn't a bad thing. Dont use soreness as a way to check the effectiveness of a workout. Many people don't get sore and yet they still grow like weeds. It might be a nice feeling some times, but just because it's not present doesn't mean you didn't have a good session.