牛津高阶（第四版）have the advantage of sb be in a better position than sb, esp in knowing sth that he does not know 比某人强, 占上风（尤指知其所不知）

You have the advantage of me, I'm afraid, eg said when a stranger addresses one by name. 您认识我, 我还不认识您, 失敬得很（如被陌生人直呼姓名时所说的话）。