Fox rolled to an easy ratings victory Wednesday night even as its "American Idol" lost a little ground, based on Nielsen overnights for the key 18-49 demo. Meanwhile, ABC struggled as two of its shows equaled or surpassed their all-time lows in the demo.

TVbytheNumbers.com reports that ABC’s "Suburgatory" matched its series low, falling three-tenths from last week in viewers 18-49 to a 1.5 average rating. "Super Fun Night" was off four-tenths, hitting a series-low 1.3.

ABC’s "Nashville" bucked the trend, ticking up one-tenth from last week to a 1.5 in the 18-49 demo.

Fox’s two-hour "American Idol" slipped two-tenths from last Wednesday’s number in adults 18-49, settling for a 3.8 average — still easily the best number for any show on the broadcast networks.

NBC saw "Revolution" match its season low in the 18-49 demo with a 1.3 average, down two-tenths of a ratings point from last week. "Law & Order: SVU" inched up one-tenth to a 1.9, while "Chicago PD" also ticked up one-tenth, to a 1.7.

CBS aired mostly repeats, with its only fresh program, "Super Bowl’s Greatest Commercials," generating a 1.9 average in 18-49, one-tenth below last year’s installment.

For prime time overall, Fox’s 3.8 average led the 18-49 demo, followed by NBC (1.6 average), ABC (1.5), CBS (1.4) and Univision (1.3). Fox also rolled to a big win in total viewers, averaging 12.4 million to lead CBS (7.5 million), NBC (6.5 million), ABC (5.2 million) and Univision (3.2 million).