Audyssey set up ?

[Go Blue]

Hope this is the best place to post this. Yesterday I ran the Audyssey set up on my Onkyo 605 and it came up with some odd setting for the db level of each speaker. I first ran it with my sub's volume set around 1/2 and it set my sub at a -3 and my others between 0 and +3. Then I ran it with the sub's volume near the 1/4 and it set the sub to +3 and all other speakers from -2 to 0. I raised the volume on the sub a bit more and everything came back at 0db's for each speaker, including sub. What do I make of this? Does it really matter?