I am not sure why... getting old and slowing down, looking bad against the Avalanche who are a talented team, not always giving full effort for 60 minutes, stupid penalties, having injuries (don't think Nied has 100% recovered from Tie Dummi B.S. elbow), failing to provide enough scoring (Raf and Nied didn't get ONE goal in this series, neither did any other d man). I imagine all of the above.
Avs defense also looked suspect at times but have feeling that 3 day rest between Games 5 and 6 rejuvenated them more than it did for NJ.
People often forget NJ has played the most hockey of ANY team the past 2 years.. Avs didn't reach finals last year and Dallas bowed out in the 2nd round this year. It obviously could lead to mental and physical fatigue.