Isn’t “By Google” in the ads more trustworthy and therefore does it perform better?

Doesn’t “By Google” in Shopping Ads inspire more trust than the name of any CSS provider? And doesn’t that affect the CTR?

We could not measure that ads “By Google” have a better CTR than ads “By CSS”. And if there is a positive effect here, it is certainly not worth up to 20% of all CPCs! In this respect, the use of CSS is always the better option.

In addition, we were able to measure that the CTR increases if the CSS provider’s brand is relevant to the product category searched for. This is particularly important if the CSS provider is a well-known brand or owns a keyword domain. So “By Nike” or “By sneaker heroes” would certainly perform better when searching for Nike sneakers than “By any CSS”.