ottawa did what they do best....choke....and choke hard. They didn't want it at all, and it seems that any canadian team that gets to the finals never wants it enough.
Ottawa lost ( well besides just playing like crap) because :
A. they had never played the ducks during the season....and that team is totally different from last year ( Rob Nidermier, Pronger, etc)
B. the dump and recovery does not work at all with the ducks, once you dump it is recovered before  any plays can be set up. Detroit realised this at the end of the seires and started passing alot more and playing the puck in the zone.
C. the ottawa defence was poor to say the least. Duck players would just walk in  with little to no poke checking, fore checking. Ray Emery saved the day way way too many times.
D. Ottawa could take advantage of any power plays, including a 5 on 3 opportunity.
E. Ray Emery does not goal tend well under pressure, nor does he have vast play off expearence.
I could go on for a while, ottawa just played really really bad hockey. The ducks won and deserved to win.