The fight between virtual and traditional MVPDs in the US has brought dubious calls of foul play against one of the most aggressive insurgents on the market – YouTube TV. US ad watchdog, the National Advertising Division (NAD), has pronounced that YouTube TV should drop its recent claim that it costs $600 less than a traditional cable package. The NAD acted following a fast-track challenge from Charter Communications, which lost 200,000 video subs in Q2 of this year. YouTube TV argued that “standalone cable” services are the basis of the comparison that led to claims of $600 in annual savings. However, this claim includes the cost of two set tops per household, which the NAD proclaimed was not a fair…