In Cover's redaction test, Google Gemma 3 caught 69% of the 149 private details in 18 bank, tax and medical PDFs, leaked 51 and over-redacted 623. Cover caught 100%, leaked 0 and over-redacted 14. Ranked by fewest leaks and over-redactions, Google Gemma 3 places 9th of 12 engines and Cover places 1st.