TOKYO (AP) — Global shares were mixed in thin Lunar New Year trading on Tuesday after Wall Street’s tech superstars tumbled as a competitor from China raised doubts over the recent artificial-intelligence market frenzy. France's CAC 40 edged down 0.2% in early trading to 7,894.05, while Germany's DAX gained 0.3% to 6,047.75. Britain's FTSE 100 rose 0.2% to 8,522.94. U.S. shares were set to trade mixed with Dow futures declining 0.2% to 44,803.00. S&P 500 futures were very slightly higher at 6,047.75. Japan's benchmark Nikkei 225 lost 1.4% to finish at 39,016.87. Australia's S&P/ASX 200 was little changed, inching down…