Lukas Google Pay has the same acceptance as Tap&Pay. Why? Because acceptance does not depend on the NFC technology, it depends on the card network.
If you add your Maestro card to Google Pay, it‘ll work everywhere Maestro cards are accepted.
If you add your Mastercard to Google Pay, it‘ll work everywhere Mastercard is accepted.
(It‘s not bunq‘s fault that some other banks decided to only allow Visa/Mastercard to be used with wallets like Google Pay, which in fact has an influence on acceptance. But well, all bunq cards work with Google Pay, so here you can choose yourself.)