Tesco wins curry tussle with Sainsbury's

Tesco and Sainsbury's have been locked in a duel over chicken korma and cut-price ham. The issue kicked off after Tesco included the products in its Price Promise campaign. Sainsbury's stormed straight to the Advertising Standards Authority, insisting that this was misleading, because the products were fundamentally different.

So what was Sainsbury's arguing about - and why was the fight ultimately fruitless?
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