Scroll through LinkedIn and bold claims from eCommerce ad agencies are everywhere — “we scaled this brand to 7 figures in 3 months” being the classic one. What actually happens behind closed doors often looks very different: overpromised results, poor strategy, inflated metrics, misaligned execution.
The flex versus the reality
Agencies love to claim full-funnel strategy across Meta and Google, data-backed creative testing, and revenue-focused scaling built for growth. Look under the hood, though, and a familiar set of problems tends to show up instead.
1. Not excluding brand traffic from Performance Max
PMax is designed to find new customers, not recapture ones who were already coming. When agencies skip excluding branded search terms, results get inflated using traffic that was already heading to the site — paying for conversions that should have cost nothing.
2. Counting brand searches as growth
If most conversions are people typing the brand name directly into Google, that’s not growth — it looks like solid performance, but it’s misleading. Real scale comes from winning new demand, not recycling intent that already existed.
3. Misaligned targeting on Meta
Broad, unfocused targeting paired with weak creative and zero exclusions is subtle but expensive. Budget ends up reaching the wrong audience, Meta’s algorithm gets confused by the mixed signal, and campaign learning stalls as a result.
4. Shifting the blame
“Results dropped because you paused Meta Ads” is a classic line — usually translating to “there was never a real plan in place, and this covers for it.” A reliable agency doesn’t reach for excuses; it adapts and owns the outcome.
Incompetence or intentional?
Not every mistake is malicious — some teams genuinely don’t know better. Others know exactly what they’re doing and continue anyway, because it protects their case studies and dashboards. Either way, the client is the one paying for it: wasted ad spend, inflated vanity metrics, lost growth, eroded trust.
What a trustworthy partner actually does
Excludes branded traffic from Performance Max and reports it separately. Segments results by intent — brand versus non-brand. Builds creative and targeting specifically for cold traffic, not recycled warm-audience tactics. Acknowledges performance dips with an actual action plan instead of an excuse. Reports metrics that genuinely matter — contribution margin, new-customer CAC, incrementality — not just headline ROAS.
Further reading
Google’s own Performance Max best practices is a useful reference for what a properly built PMax campaign should look like.
Related reading on this blog:
- Before You Launch New Creatives, Audit This Hidden ROAS Killer
- Scale Meta Ads with the Right Metrics
The real question when hiring an eCommerce ad agency isn’t just “can they scale” — it’s whether they can scale with clarity, strategy, and accountability. Ask deeper questions, inspect the campaign structure, and protect the budget. When an agency cuts corners, it’s rarely their business that suffers for it.