The big news last weekend was NBC’s national rating for its college football No. 1 showdown Saturday between Notre Dame and Florida State, which crossed the goal with a 16.0 rating/39 share, the highest rating for any regular season college gridcast since a showdown between Auburn and Alabama in 1981.In more conventional battles, CBS enjoyed big wins in daytime and latenight, ABC ruled the morning race and the Fox Children’s Network beat up on the kidvid competition, according to Nielsen daytime and fringe ratings for Nov. 8-12. “Late Show With David Letterman” posted a 5.2/17 to notch its 11th straight win over a competitive “Tonight Show With Jay Leno” (4.2/13), while also topping “Nightline” (5.7/16) in their common half-hour after trailing the ABC newsmagazine for the first time a week earlier. “Late Night With Conan O’Brien” put up a 1.7/9. CBS also won by a wide margin in daytime with a 6.2/23 average, compared with ABC’s 4.6/17 and NBC’s 3.2/12. The Eye web’s win streak now stands at 245 consecutive weeks. ABC led among the key demographic of women ages 18-49, with a 3.7 to CBS’ 3.6 , but the Alphabet web has reaped few benefits from its heavily promoted Luke & Laura return to “General Hospital” (6.3/22), which was down marginally from the previous week. ABC got better news from “Good Morning America” (5.0/21), which put up its highest rating of the fourth quarter in topping “Today” (4.4/18) for the 11th consecutive week. “CBS This Morning” delivered a 3.0/12, as all three breakfastcasts were up in ratings over the prior week. Fox Children’s Network again dominated the Saturday morning race, posting a 6 .9 rating among children 2-11, well ahead of both ABC (5.3) and CBS (5.1) in their four common hours from 8 a.m. to noon. Household averages were Fox, 3.5/13 ; CBS, 2.8/10; ABC, 2.5/9. Fox was led by “Mighty Morphin Power Rangers” and “X-Men,” which each corralled 30-plus shares among kids. The Notre Dame-Florida State gridcast Saturday also topped the weekend’s pro games. By contrast, ABC’s regional college coverage scored a 4.9/11.