Facebook acknowledged last week that it overestimated average viewing times for video ads on its platform for two years. Commenting on that development this week, Interpublic Group CEO Michael Roth told an Advertising Week crowd that it was “not that big a deal.”

At least not for IPG. Roth explained that the reason he feels the way he does about the contretemps is that for IPG anyway, average time viewed is “not a key measurement for buying on Facebook.”

Read the full MediaPost article here.