Analysts say that Tesco’s big advantage over major international rivals is its unrivaled ability to manage vast reams of data and translate that knowledge into sales. While data crunching may sound dull, it has given Tesco two major advantages: an unmatched ability to operate multiple retail formats — ranging in size from convenience stores to hypermarkets — and the market knowledge to offer what many analysts say is the best and broadest range of __________________________from any retailer.