The easiest way to evaluate whether to trust the development of the studio's website is to look at the quality of its website.
Absolutely similar in context. If a company is not able to correctly set up its own RK, then there is no question of any effectiveness of its work for clients.
Let's do a simple experiment.
We take some simple thematic query, in our case “advertising on the Internet”, go to WordStat, look for garbage queries in the semantic core, the benefit of such is enough.
For example,
3228
445
346
167
That gives us a total of about 4,000 empty hits. Let me remind you that any empty display of an ad to a non-target audience is detrimental to the advertiser's wallet, because it lowers the CTR and, as a result, increases the cost of a click. A click to a non-target audience is even more harmful - as the advertiser’s budget is wasted.
So, we analyze the issue on the original request

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And we analyze requests with the inclusion of any garbage.




Conclusion: "specialists" of companies 1 and 2 are better to look for another job and not continue to carelessly merge customer budgets into zero.
PS If you can hardly see the details - screenshots in normal resolution are
here