All that shows is that the B mix was pushed harder in Sonar in terms of emulation. Hence perhaps the slight increase in top end. I started out at first thinking the B was Mixbus but after a while I started hearing less of a difference. Like I mentioned in a previous post how much console emulation was actually used in Sonar? At one point I preferred A for a while too.
It does not prove that Sonar can match or better Mixbus either. Supposing I did the test in Studio One and really pushed the Tube emulation to the point where the top end went a little over Mixbus. Does that automatically mean it is better?
I am still keen to do the null test thing though on both the drum session and the Roland session too. I think that might be interesting to find out. I am starting to think the null test might be a little more relevant.