How good is the proccessing in Sony DVP NS 999 ES?

Hi! How good is a built-in processing (Dolby Digital, DTS) for movies ONLY, in Sony DVP NS 999 ES universal player in comparison with good HT processor ( Bryston SP -1.7, or Anthem AVM 20 for example). I'm currently using Sony's decoding with McIntosh C 45 all- analog preamp for movies, so I've been wondering, how much am I loosing by not using dedicated HT processor. My previous processor was Bryston SP- 1.7.