The cable channel’s ratings rivaled those of broadcast TV networks and beat CBS, even though those channels are more widely available to a bigger audience. “We are not only leading cable, but rivaling the broadcast networks.”In January, Fox News averaged 2.4 million viewers in weekday prime time, topping CBS’ 2.2 million viewers. “Special Report with Bret Baier,” the popular 6 p.m. nightly news show, which is in constant competition with its broadcast TV rivals. Beating the CompetitionOver the past several months, Fox News has challenged broadcast TV news for viewers. Fox News swept cable news’ top five programs in total viewers, led by “The Five” with 3.7 million viewers.