This guide describes different scenarios where you might encounter discrepancies between data in Google Search Console and the results you see in your Supermetrics reporting.
Google Search Console aggregates data to protect privacy and improve speed.
Supermetrics automatically corrects discrepancies caused by anonymized search sampling at the Aggregate level, and the feature can be enabled at the Page level.
Supermetrics returns all search data (web, image, video) by default, whereas Search Console displays web search only.
To fix this, add this filter to your query: Search type EQUALS WEB