I’ve run campaigns both ways—manual placements vs. Meta’s Advantage+ placements and audiences—and here’s what I’ve consistently found:
Advantage+ Placements: Worth It (Most of the Time)
Meta’s algorithm is better than we give it credit for. When I switched to Advantage+ placements, the CPM dropped and reach expanded—especially on placements I wouldn’t have prioritized manually (like Marketplace, Stories, or even Reels).
Unless you have a very specific funnel or creative that only works in one format, Advantage+ tends to give better scale and efficiency.
Advantage+ Audience: Hit or Miss
Now for Advantage+ Audience (previously called broad targeting)—it’s been great for top-of-funnel in most cases, especially with strong creative.
If your pixel has solid conversion data, Meta can do the heavy lifting.
But for niche or high-ticket offers, custom/lookalike audiences often perform better.
Why You're Seeing Inconsistencies
If you’re using manual placements and the client is using Advantage+, your ad delivery and optimization paths are entirely different. That’s likely why you’re seeing inconsistent results, even if targeting overlaps.
My Take
Start testing with Advantage+ placements first—and if your data supports it, let Advantage+ audience run alongside for broad discovery. Then layer in exclusions or custom segments as you scale.