It's a good point. Ditto MCC members. There's no doubt that in the AFL and MCC combined there would probably be 22-23,000 neutrals if full. Then add the possibly thousands of neutrals in all the hospitality corporate areas. I don't think it would be inaccurate to suggest neutrals will account for 25,000 of the 90,000 on Saturday night.. Still 60,000+ Tigers fans but not necessarily the most one sided crowd in AFL history. Maybe, maybe not.
This is why crowd splits are and always will be impossible to tell at MCG/Etihad games unless you have access to turnstile data.