OXFORD - The turf battle for European equities became yet more complicated last week as the SWX Swiss stock exchange and Tradepoint Financial Networks plc, an AIM-listed rival to the London Stock Exchange, announced that they intend to create a pan-European blue chip exchange called virt-x. The move is backed by the Tradepoint consortium, a collection of high profile blue chip banks and financial services firms including ABN AMRO, CS First Boston, Deutsche Bank, Dresdner Kleinwort Benson, J.P. Morgan, Merrill Lynch, Morgan Stanley and UBS Warburg, which has a 54