A little wierd, Avia and the 950 test tones match better on my system, than Avia and the test tones on my prior Sony pre/pro.
What you could do is to try some music/movies each way, and see what sounds better. One might be bass heavy, one might be "just right", or one might be bass-lite, and the other "just right".
Might want to double check your bass management settings, and how the sub is setup too.