By Daniel Kline Two retail giants leaned into the same strategy: Target was a big winner while Amazon failed. But the online-retail giant might have a way to fix that. When Brian Cornell in 2014 took over as chief executive at Target (TGT) – Get Target Corporation Report, the retail giant had lost a little bit of its “Tar-Zhay” magic — that hard-to-explain connection between the brand and its customers. During the 2013 holiday season the chain had suffered a massive data breach in which millions of customers had their credit- and debit-card information compromised. That was a big deal at the …