I'm not sure whether you're asking a question and are looking for an answer.
But assuming you're wondering why you got more people watching your game against the Panda Lovers vs your #1 opponent, I think the reason could be that Pandas generally pulls in more fans than noanoa. This could have to do with that Pandas were just crowned champions and promoted and noanoa was a #5 last year.
The only other team that played Pandas at home before they were replaced was wildcats-kent (it looks like he had a full house but extended his arena since then) so unfortunately not that much data to check this hypothesis.
You are correct that current standings influence supporter numbers. But I think there are more factors.
p.s. It's not everyones problem. I play this game as well and can see how my own choices influence my results and my attendance. Different opponents will lead to different attendance variables in the algorithm but it's my job to optimize what I can do on my end.
Crunchy! If you eat fast enough