In Cover's redaction test, Microsoft Phi-4 caught 75% of the 149 private details in 18 bank, tax and medical PDFs, leaked 49 and over-redacted 149. Cover caught 100%, leaked 0 and over-redacted 14. Ranked by fewest leaks and over-redactions, Microsoft Phi-4 places 3rd of 12 engines and Cover places 1st.