Google Ads Is Not Meta Ads: The Mistake That Costs Most People Money
Using Meta's logic to run Google Ads is like playing chess with the rules of dominoes. They're different games, and mixing them up is costing you dearly.
The confusion is understandable. On the surface, both platforms sell the same thing: access to a huge audience you can show your ad to. But that's where the similarity ends.
The fundamental difference is a single word: intent.
Meta interrupts. Google answers.
When someone sees your ad on Meta, they weren't looking for anything. They were scrolling through their friends' photos, watching Reels, looking at memes. Your ad showed up in the middle of that. It's interruption advertising. Like a billboard on the highway.
When someone clicks your Google ad, they had just typed something into a search engine. A phrase with a keyword you decided to buy. That person has a declared intent. They're actively looking for something. Your ad is the answer, not the interruption.
Meta lets you create demand. Google lets you capture it. They're different moments of the same buying process.
This changes everything: the creative, the message, how you measure, how you optimize and the psychology behind every click.
Creative on Meta vs. on Google
On Meta you have 3 seconds to stop the scroll. The visual hook is everything. The video, the image, the first frame. If it doesn't stop them, it doesn't exist.
On Google Search, the ad is pure text. No image, no video. You have three 30-character headlines and two 90-character descriptions. The creative work is in relevance: the ad headline has to echo directly what the user searched. If they searched «dental clinic Concepción emergency», your headline should say something like «Urgent dental care in Concepción — Book today».
Meta copy transplanted to Google Search almost always fails. One talks about brand and emotional benefits. The other has to answer a specific question.
The metrics that matter in each
| Metric | Meta Ads | Google Ads |
|---|---|---|
| Main signal | CPM, CTR, frequency | Quality Score, CTR by keyword |
| Conversion efficiency | ROAS, post-click CPA | CPC, conversion rate, CPA |
| Warning signal | Creative fatigue (high frequency) | Impression Share lost to budget |
| Key optimization | Creative + audience | Negative keywords + match types |
The most expensive mistake: ignoring negative keywords
This is the most common and most costly mistake I see in Google Ads accounts. And there's no equivalent on Meta.
When you buy the keyword «running shoes», Google also shows your ad to people searching «cheap used running shoes», «baby size running shoes», «how to repair broken running shoes». You pay for every click. If you don't have a solid list of negative keywords, you're literally giving money away.
On Meta this problem doesn't exist because you don't buy keywords. The algorithm decides who sees the ad. On Google, the responsibility for filtering out irrelevant searches is yours. Always.
When should you use each one?
It depends on whether you have a demand problem or a capture problem.
If people in Chile are already searching for what you sell — «labor lawyer Concepción», «online guitar lessons», «catering service Biobío» — Google is probably the right platform to start with. The demand exists. You just need to show up when they search for you.
If what you sell is new, if people don't know your solution exists or if you need to build a brand, Meta is better. Your ad can create the desire before anyone has the language to search for it.
The ideal scenario is to use both together: Meta at the top of the funnel to generate awareness and demand, Google at the bottom to capture those who already have buying intent. But that requires enough budget to run two channels well. With a limited budget, the choice depends on where you stand.
Why the same manager isn't always right for both
It's not that they're incompatible, but the muscle is different. Managing Meta well means having an eye for creative, understanding scroll psychology, reading fatigue patterns and knowing when to scale. Managing Google well means surgical keyword handling, understanding Quality Score, structuring campaigns with bucket logic, and being rigorous with real search data.
There are good people at both. But if someone tells you they master both equally and have never specialized, I'd ask more questions.
This mainly applies to Google Search Ads. Google has other formats (Performance Max, Display, YouTube Ads) with different dynamics that deserve their own draft.
Let's talk about how to apply this to your business.