This is the problem with non-laboratory research. We can't control the experiment. What if we had this same record with Zlatan? How much of an attendance bump would we have? What if we had this same team but were on the playoff bubble? How much attendance would we lose? What if we had Zlatan and were missing the playoffs? Would it wash? And what if any of these things happened in a SSS?
What we know is this. Stars boost attendance. Winning boosts attendance. SSS boosts attendance. How much for each of them? Who knows?
Further, I wonder how much a really good front office boosts attendance? How much impact do any of the following have:
- Building mini-pitches around the city
- 24 hour match at Rockefeller
- Player meet and greets
- Food discounts (or lack thereof) at stadium
- Face painting / fan zone
- Pro-inclusion initiatives like the no p*to chant halftime video
Alas, we can't run double blind experiments for any of this.