"The data include viewers who watched the show either live or on DVR the same day it aired. Those numbers will probably increase again when the "Live +7" data becomes available, which will show how many people watched it during the first week it aired."
That's a little unfortunate for Dollhouse. So far as I am aware, Dollhouse airs only on Fridays at 9:00, while SG:U has showings on Fridays 9:00 and 11:00 and probably a handful more throughout the week.
All the more reason I hope that Joss takes his next show to cable.