The number of conversion is different between Google Analytics and Matomo

We used google analytics before and we started to change to Matomo from April 2023.
There is one campagne that we achieved only 15k revenu in one year 2022, but in Matomo we achieved 22k just in 2 months.

Whether the way Matomo and Google Analytics count the “purchase” and “valeur purchase” is different.
Thanks for your reponse

The total, unsegmented revenue stays in the same ballpark?