That's only speculation here, but perhaps there's a random factor involved. 1k does look like a large fluctuation though.
Another influence could be your opponents strength. If your 6th game opponent was a bottomfeeder, your attendance was probably a bit lower.
opponent in game 3 was 4th guy, who had 1 win and 2 losses.
Game 6: opponent was one game (and not 2 games like in game 3) behind me.
In your polls, do you have 5 stars across the board? If less, there's no reason to expect attendance to go up indefinitely. I've had my polls decline on a winning streak before, and attendance usually dropped right along with it. Fans can get upset you didn't win a game by enough, for instance.
hmmm. i just noticed something in the polls tho. I've got nearly 5 stars everywhere, expect for the question: the team manager is working hard to improve his team. I dropped from 4.5 balls to 2.5 balls their... (don't understand the drop tho)
And your last sentence, about fans being upset that i'm not winning games by enough, is an interesting one. MY cupgames were pretty poor performances up till now ( i'll be exiting the cup tomorrow, so i guess fans won't be to happy with that either...)
if any new ideas pop up, feel free to write em down, but Swift Chase put down some interesting idea's.