(Recasts and adds detail.) PARIS (MarketWatch) — French insurance company Axa SA said Thursday that strong sales growth in the U.S. and Australia, plus the contribution from its mid-2006 Winterthur acquisition helped lift revenue 20% in 2007. On a comparable basis – which figures in Winterthur’s results from all of 2006 and 2007 and is on a constant foreign-exchange basis – revenue would have been up 5.4% in 2007. Revenue over the period rose to EUR93.63 billion from EUR77.97 billion a year before.