Yes, absolutely. The offline installer installs the exact same, full-featured Brave browser you would get from the main website. There is no difference in features, functionality, or performance.
To ensure you are getting the real file, follow these steps: download brave browser for pc offline installer link
Advanced users can compare the SHA-256 hash of their downloaded asset against the official checksums listed in the checksums.txt file provided inside the corresponding GitHub release asset list. Managing Updates After Offline Installation Yes, absolutely