It may be down to taste Roy but for a demo they sound OK and balanced to me. If it is bothering you then ask for a different kit or sound. It is an easy fix for the studio who did the demo. They will have the masters and a tweak is quick. They will have a huge arsenal of samples and kits to choose from. I must admit I like the sound of a live drummer but it is so expensive these days and studios tend to use high end loops and samples as per this demo.