I'd be completely shocked if he missed here. Especially in a year like you said..... has a lack of strong contenders.
Lol. Looper missing... would officially make JGL a curse for the screenplay category.
(500) Days of Summer ~BFCA, WGA, won ISA and won Las Vegas~,
50/50 ~NBR win, WGA, BFCA, won ISA~
Since (500) Days of Summer won the screenplay award @ Las Vegas this should be a premonition for you that Looper won't be nominated at the Oscars.
JGL being in it, and me thinking that it would be the one film that would most likely hit everything besides Globe & miss... made me predict it to win NBR. And of course it did.
So yeah.... I think Looper isn't going to get nominated.
Also, to many people are discounting Flight yo.
Its recent BFCA nomination got it a bit of attention, and one of it remains one of the praised elements of the film. Plus the writer has a sob story behind the script (personal, his addiction, working on it for years, etc).
Oh, and it's pretty LOCKED for WGA. Especially with so many ineligible.