Jan 7 - PNC Financial Services Group, Inc. (PNC) once again reported noisy earnings results in the fourth quarter 2012 (4Q'12), according to Fitch Ratings. The company reported net income of $719 million for the quarter which included several material mortgage-related charges and one-time gains. Fitch notes that PNC's reported earnings follow a pattern of noisy results throughout 2012, expect that 2013 performance should be more reflective of core performance. PNC reported nearly $400 milli