Investors interested in stocks from the Banks - Foreign sector have probably already heard of Sumitomo Mitsui (SMFG) and National Australia Bank Ltd. (NABZY) . But which of these two stocks presents investors with the better value opportunity right now? Let's take a closer look.The best way to find great value stocks is to pair a strong Zacks Rank with an impressive grade in the Value category of our Style Scores system. The proven Zacks Rank emphasizes companies with positive estimate revision trends, and ...