Ten common myths: (1) AI handles everything, but Meta and Google make the advertiser responsible (PPC Land); (2) global benchmarks are targets, but they vary across sources (WordStream, via secondary sources, indicates CPC of 5.42 dollars and Visionary Marketing 4.34) and don’t represent Portugal; (3) more clicks are better; (4) there’s a first-place guarantee; (5) last click tells everything; (6) new campaigns give results in days; (7) more budget solves; (8) the page doesn’t matter; (9) high ROAS means profit; (10) PPC and SEO compete. Each costs money; the facts below show why.
Myth 1: “AI handles everything”
Fact: Meta, from 30 October 2026, and Google, since 1 July, make the advertiser responsible for what AI creates or alters, according to PPC Land. Automation saves work, but doesn’t remove responsibility. Whoever doesn’t review generated assets takes on the risk of wrong claims, inappropriate images and off-brand texts.
AI is a tool that demands human control.
Myth 2: “Benchmarks are my target”
Fact: benchmarks vary across sources. Secondary sources attribute to WordStream an average CPC of 5.42 dollars and a conversion of 8.18% (confirmed by Search Engine Journal for conversion); a 2026 Visionary Marketing report indicates 4.34 dollars and 5.71%. They’re mostly from English-speaking markets and don’t represent Portugal. Your target is margin: how much a customer is worth and how much you can pay.
Use benchmarks as context, never as a goal.
Ten PPC myths in 2026
- AI handles everything
- Global benchmarks are the target
- More clicks are better and there’s guaranteed first place
- Last click tells everything
- Results in days and more budget solves
- The page doesn’t matter and high ROAS is profit
Myths 3 and 4: “More clicks” and “guaranteed first place”
Fact: clicks are a means; what pays is the customer. More clicks from browsers cost more and yield less. And in Google ads there’s no position guarantee: the auction depends on bids, quality, competition and context, and formats change (AI Overviews appear in 88% of commercial searches in a Semrush sample, according to PPC Land). Distrust anyone promising first place.
Pay for business results, not positions.
Myth 5: “Last click tells the whole story”
Fact: last click tends to credit brand search and undervalue discovery. In October 2026, Google is testing in beta a campaign type attribution in which Demand Gen receives full credit (PPC News Feed), which illustrates the problem: each view tells a different story. To decide, use total sales, brand searches and experiments.
Views are clues; tests are proof.
Profit is margin minus costs, not revenue over spend.
Myths 6 and 7: “Results in days” and “more budget solves”
Fact: Google recommends one to two conversion cycles before assessing bidding changes, according to PPC Land; concluding in three days is noise. And more budget in a campaign with a weak page, weak offer or wrong measurement just spends faster. Since 17 August, budget-limited campaigns follow targets more closely (PPC Land), so budget and targets must be thought of together.
Scaling without a base amplifies problems.
Myths 8 and 9: “The page doesn't matter” and “high ROAS is profit”
Fact: the page decides whether the click becomes a customer; improving conversion from 2% to 3% equals 50% more customers with the same spend. And ROAS isn’t profit: it ignores margin, returns, service costs and fees. A ROAS of 5 with a 15% margin may give a loss. Calculate the maximum cost per customer from margin.
Profit is margin minus costs, not revenue over spend.
Myth 10: “PPC and SEO compete”
Fact: they complement each other. PPC gives immediate visibility and tests messages; local SEO builds presence you don’t pay per click for. SEO data from external tools may be altered by Google (Ahrefs says 5% to 20% of results served to tools are altered, according to PPC Land), so your Search Console and conversions are the reference.
An integrated local strategy yields more than a single front.
How to use this list with your agency
Ask the provider, kindly: “Which of these myths do we hear here?” A mature agency recognises and corrects; one repeating myths (guarantees, benchmarks as targets, AI handling everything) shows fragility. Use it for yourself too: which myths does your team have?
Questioning with facts is a way of protecting the investment.
Summary and questions for your manager
Summary: AI demands control; benchmarks are context; there’s no position guarantee; last click misleads; results take time; page and margin decide. Questions: what is our maximum cost per customer? What evidence do we have that AI helps? How do we measure without last click?
If you want to review your PPC decisions in light of these myths, I can help build a checklist.
Frequently asked questions
Does the CPC benchmark apply to Portugal?
No: they come mostly from English-speaking markets and diverge between sources. Use your history and your margin.
Does AI remove the need for review?
No: Meta and Google make the advertiser responsible for what AI creates, according to PPC Land.
Can I guarantee first place?
There’s no position guarantee in Google ads. Distrust anyone who promises it.
Sources consulted
Keep reading
- PPC glossary for business owners: 30 terms you need to know in 2026, in plain language
- Bilingual PT-EN site with hreflang: how to structure European Portuguese and English versions for ads and SEO in Portugal
- Online reputation: how to ask for, respond to and measure reviews on Google and other platforms, and why ads highlight them