I guess I have a different point of view. For a winning team, the opponent strength shouldn't be a factor, when the warriors play at home they sold out for every single game, whoever the opponent is.
At the other side of the scale, I do understand that a suns - warriors get a much higher attendance than a suns - Cavs...
As a matter of fact when you're winning there shouldn't be a +/- 20% attendance, that's not fair and not understandable.