Perry and Getzlaf, possibly Kunitz as well were Murray pieces. Giguere was there before both Murray and Burke. So was R Niedermayer, who helped bring in S Niedermayer. Selanne chose Anaheim and nowhere else. Pronger was a good trade, but Burke used pieces (Lupul and Smid) left by Murray or a previous GM (just not sure about those two). I think you exaggerate Burke's contribution of core players.
Exactly, Burke has to be one of he most overrated GMs in the league.