** Oil major BP's shares down 3 pct, bottom of theFTSE, after posting Q2 profit miss
** Q2 underlying replacement cost profit, co's preferredmeasure, falls 45 pct to $720 million, missing consensus of $840mln
** Shares biggest drags on the FTSE and the Stoxx 600 in their worst day since March
** Brent, WTI weaker on the day, Stoxx 600Oil and Gas Index at 2-wk lows and worst-performing inEurope (venkateshasoumithri.mamidipudi.thomsonreuters.com@reuters.net)