Golden St may be able to score like those Suns teams, but they defend at a level that Phoenix never got close to approaching. Golden St was the best defensive team in the league this year. They won 67 games in a historically tough Western Conference, they had a 10+ ppg scoring margin on the year, the only teams that have done that in the last 25 years are the two great Bulls teams after Jordan's baseball sabbatical and the Celtics in the first year of the big three.
This is pretty much what I was talking about, if it was the Spurs team that had those numbers, people would be handing them the title at this point. I'm guilty of it too, in that I have a hard time seeing them as that dominant but the fact is teams that put up regular season numbers like they do, win titles.