Same campaign. Same demo. Same quarter. But Comscore counted 43.5 million impressions and iSpot counted 24.6 million. Somewhere, a CMO’s head explodes. That gap is the result of an interesting new piece of research presented in Warner Bros. Discovery's white paper "The Unified Reach Paradox," which put VideoAmp, iSpot, Comscore, Innovid and Samba side by side across 50+ campaigns. WBD's own research chief calls the variance "quite alarming." I'd call it a 77% spread putting measurement in question altogether. The Industry’s Irony It’s an irony that as an industry, we can’t get measurement straight, the thing that just involves counting. The thing we were supposed to nail before getting fancy with identity graphs, co-viewing and personification. WBD's David Porter says it's "kind of crazy" we still debate what a video impression is. One could find stronger language. The buyer survey accompanying the research project backs him up: 73% name unified reach a top missing data point, and 79% don’t fully trust outcomes without it. So the whole outcomes gold rush - CAPIs, attribution, ROAS decks - rests on numbers nobody agrees on. What Should Happen Tomorrow Perhaps we can have an advertising kumbaya. Standardize impression and viewability definitions, industry-wide, YouTube included. Align universe estimates, or disclose the recipe. Slap a nutrition label on every projection model. One more thing: the biggest name in TV measurement skipped the bake-off. Nielsen doesn't do side-by-sides. Make of that what you will. adexchanger.com/tv/new-wbd-r…