Anaheim was quietly very good in the 2nd half of that season. Going into that series, I thought Detroit would win but that the Ducks would be a harder out than most were expecting. Both teams had similar 2nd half records:
Anaheim: 25-11-2-3
Detroit: 25-10-3-3
Quick look at the rosters and Detroit was a little top heavy on the blue line. In the Anaheim series:
Lidstrom: 33:35
Schneider: 28:16
Dandenault: 25:51
Chelios: 25:43
Woolley: 15:25
Bykov: 11:14
Jiri Fischer missed that postseason after a knee injury in November. Dandenault (13:29) had been a #6 defenseman the previous playoff. And maybe this was around the time Chelios was starting to slow down?
Despite that, Detroit did handily outshoot Anaheim in that series.