To buyers, three players stand out: NBCUniversal, Viacom and Turner. They gave low marks to ABC, CBS, Discovery and A&E for supplying little more than the data they and their clients already have access to. Said one buyer: “All ABC is doing is optimizing your prime-time inventory, which you could do on your own.”
Source: Which Network’s Data Platforms Do Media Buyers Actually Like? | Adweek