Watchmen is definitely a hit for HBO, but only a small percentage of its viewers watch on Sundays

Variety

The Damon Lindelof series has averaged 7.1 million viewers across HBO’s linear channels and streaming platforms, yet Sunday's episode was viewed by 779,000 viewers based on Nielsen's live + same day ratings. In fact, Watchmen is the No. 1 new premium cable show of the year, according to Variety.