NEW YORK (AdAge.com) -- ABC sales chief Mike Shaw hasn't gotten over an earlier defeat in the "Live Plus 7" commercial ratings debate. In the haggling that resulted in the 2007 adoption of TV's new commercial ratings system, "Live Plus 3" -- or C3 -- won out. At the annual TelevisionWeek/Ad Age Upfront Advertising Summit last week, Mr. Shaw continued to hammer away for a much longer time-shifted period.