“America’s Got Talent” may be considered the top broadcast show of the summer, but the NBC competition actually just beat CBS’ “Big Brother” head-to-head in the key ratings demo for the first time this season.

The “AGT” Wednesday results show, which is generally lower-rated than the Tuesday performance episode, earned a 1.5 rating/7 share among adults 18-49 and 9.9 million total viewers. “Big Brother,” last night’s No. 2 show, posted a 1.4/7 and 5.6 million viewers.

With the season finale of Jennifer Lopez’s “World of Dance” filling out the next two hours, NBC walked away with an outright primetime win on Wednesday. Fox finished second in the main demographic, while CBS was runner-up in total viewers.

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NBC was first in ratings with a 1.3 rating/6 share in the advertiser-coveted 18-49 demographic and in total viewers with an average of 7.1 million, according to preliminary numbers. After “AGT” aired from 8-9 p.m., “World of Dance” averaged a 1.1/5 and 5.6 million viewers.

Fox was second in ratings with a 1.1/5 and third in viewers with 3.7 million. “MasterChef” was the only show on the network’s two-hour primetime schedule.

CBS was third in ratings with a 0.8/4 and second in viewers with 3.8 million. Reruns followed “Big Brother.”

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ABC was fourth in ratings with a 0.6/3 and in viewers with 2.5 million. Following repeats, “Castaways” at 10 had a 0.4/2 and 1.9 million viewers.

Telemundo was fifth in ratings with a 0.5/2 and in viewers with 1.5 million.

Univision was sixth in ratings with a 0.4/2 and in viewers with 1.3 million.

The CW was seventh in ratings with a 0.2/1 and in viewers with 682,000. “Burden of Truth” at 8 got a 0.2/1 and 779,000 viewers. A rerun followed.