So you have two different countries, two different sets of laws, and two different services with wildly different offerings.
You can’t really compare a drilled down percentage of compliance and reach the conclusion that there’s a difference in methodology under those conditions.
Just the much broader spectrum of services that proton offers makes it more likely that they will be in a position where they are required to comply with a larger portion of requests than tuta.
This is not intended to be a defense of proton, just a recognition that metrics are hard to take seriously in a comparison.