* Lower provision for income taxes helped Q4 shr * Q4 same store sales up 06 pct * Shares down 1 pct in early trading (Adds analyst, byline, updates stock price) By Nicole Maestri SAN FRANCISCO, Feb 23 (Reuters) , Target Corp ( TGTN ) posted a quarterly profit slightly above Wall Street expectations, but investors had hoped for a bigger improvement and shares fell 1 percent The No 2 US discount retailer said sales in the holiday quarter were better than expected, and it expects traffic and sales of discretionary merchandise to improve in 2010 "In this (market) if you don't blow the number out, your stocks not going to go up and this was basically an in line earnings number," said Robert W Baird & Co analyst Peter Benedict Net income was $936 million, or $124 per share, in the fourth quarter ended Jan 30, compared with $609 million, or 81 cents per share, a year earlier