Examples of his other investments in the retail sector include jewellery store Borsheims, furniture retailer Nebraska Furniture Mart, chocolatier See's Candies and the world's largest retailer WalMart Inc. Many of these retailers continue to perform well with Tesco a glaring exception. Here are two problems that Tesco faces but where Woolworths looks to be excelling, making the Woolworths investment thesis appear more appealing: Market Power – Buffett likes to buy businesses with "moats". The dynamics of the UK market compared with the Australian market appear to be in Woolworths' favour. Woolworths looks to have a reasonably attractive moat given the scale advantage it enjoys which allows it to be a low-cost retailer. Likewise, its incumbent property footprint sees the group have anchor tenant status in many malls and shopping centres – a position which a new entrant would most likely fail to match or shake.