AT&T has given itself a big pat on the back this week for reaching 1 million DirecTV Now subscribers one year after the OTT streaming service launched. Yet here at Faultline Online Reporter, our projection that it would need to acquire around 2 million subs in the same time frame, shows that DirecTV Now is not fulfilling its potential, never mind offsetting dramatic pay TV losses. DirecTV Now got off to a slow start, but momentum has picked up towards the end of this year, as AT&T reported 787,000 subscribers at the end of September, meaning over 233,000 net additions in just two months. Provided it keeps the ball rolling, DirecTV Now could close Q4 with 350,000 new sign ups,…