Your Google Ads dashboard says one thing. Your Meta Ads dashboard says another. Your CRM tells a third story. This is the attribution crisis — and it is costing brands millions in misallocated spend every single month.
Why Every Channel Claims the Win
Last-click attribution is the default for most platforms. That means Google, Meta, and every other channel are all claiming credit for the same conversion. The result? Your reported ROAS looks great on paper but your actual Marketing Efficiency Ratio (MER) tells a very different story.
"When every channel claims 100% of the credit, you end up with 400% of the conversions — none of which are real."
The MER-First Approach
MER (Marketing Efficiency Ratio) is simple: Total Revenue ÷ Total Ad Spend. It does not lie. It does not care about channel-level attribution models. It just tells you whether your overall marketing investment is generating returns.
- Calculate MER weekly, not monthly
- Set MER targets before allocating budget
- Use MER as the kill switch for underperforming channels
Building a Unified Revenue Engine
The fix requires combining server-side tracking, a single source of truth CRM, and incrementality testing. No shortcut exists — but the payoff is knowing exactly which spend is generating real returns.