CBS’ 8 PM comedy The Big Bang Theory finished Thursday night tops in the 18-49 demo (3.7), in viewers (14.95 million), and in 25-54 year olds (5.3), though it was down a hair from the previous week’s Valentine’s Day-themed episode (3.8, 15.98M).

But Fox edged out competitors in the demo (2.0) for primetime in Live+Same Day stats, while CBS came out tops in overall audience (8.54M).

Most of Thursday’s primetime broadcast series slipped week to week, with notable exception of CBS’ 9 PM comedy Mom and NBC’s 10 PM drama Shades Of Blue (1.1) which were welcomed to the flat-week-to-week club.

ABC’s Shondaland slate – Grey’s Anatomy (2.2/8), Scandal (1.7/6) and How To Get Away With Murder (1.4/5) –  ranked as Thursday’s top three dramas for a second week in a row in the demo, besting the night’s other broadcast dramas. That said, Grey dropped 12% versus last year same night, Scandal declined 48%, and HTGAWM tumbled 52%. Grey’s was whomped by CBS’ comedies in the 8 PM hour, demo and total viewer-wise. Scandal tied CBS comedies in the demo at 9 and was edged out by Fox’s American Idol (2.0). (Idol clocked same 2.0 for its two-hour run and 8.12M viewers overall).

HTGAWM was tops in the demo at 10, besting Shades Of Blue and CBS’ Elementary (1.1). NBC celebrated anyway, noting Shades Of Blue retained 100% of prior two weeks’ demo ratings, despite ABC’s drama having returned to the slot February 11.

Falling a tick from last week were CW’s dramas DC’s Legends of Tomorrow (0.8, 2.55M) and The 100 (0.52, 1.37M).