Golden State added a perennial scoring champion to their arsenal with Kevin Durant. So far they look decidedly mortal and worse than last year. Part of this can be put down to the fact that it takes any team time to gel, but some of it seems like just bad strategy. Scoring was always the GS strength, while rebounding was always a bit iffy. So they added another super scorer and gave away some moderately capable rebounding. Kevin Durant is a good rebounder, but at 6-11 and maybe 220 (he is listed at 6-9 and 240) he's not really built to bang with the big boys.
Super on paper isn't always super on the floor.