Wendy Liebman and Carol Leifer faced the challenge Saturday night of living up to top billing at the 4th Annual Women In Comedy Festival, a five-day event that featured an impressive array of 225 performers, covering stand-up, sketch, improv, storytelling, and musical comedy. They are veterans with mainstream recognition - Liebman’s one-hour Showtime special ”Taller on TV” aired in January and ex-”Seinfeld” writer Leifer won a Writers Guild Award in February for an episode of ”Modern Family.” But supporting comics Kelly MacFarland, Erin Jackson, and Erin Judge almost matched them laugh for laugh.