These numbers indicate ratings were indeed good. The combined viewings are the most meaningful because fans can watch the episodes when they want to. I am an On Demand viewer.
"The complex drama proved a challenge for viewers, and "Luck" fell far short of an HBO hit such as "The Sopranos," drawing as few as 500,000 for a weekly debut showing. But the combined figure that included DVR viewings was
4.8 million per episode, exceeding that of other HBO shows including "Treme," "Enlightened" and "Bored to Death.""
http://www.boston.com/ae/movies/arti..._real_for_hbo/