Audiences might not be too much into either show, but in a head-to-head battle between “Knight Rider” on NBC and “Pushing Daisies” on ABC, it looks like KITT is taking the trophy. “Knight Rider” scored an estimated 4.2 rating/6 share, according to Fast National ratings from Nielsen Media Research Wednesday, easily beating a 3.6/6 from “Pushing Daisies,” Zap2it says. Both shows were behind “Bones” on Fox as well as comedies on CBS, and finished ahead only of “America’s Next Top Model” on The CW. But for “Pushing Daisies,” its audience was only 29 percent better. Both shows have slipped a bit in the ratings, “Knight Rider” off 8.7 percent from the previous week while “Pushing Daisies” is down 12.2. Also, the 9 p.m. hour for ABC was able to find an audience pickup of 39 percent …