Max Milburn
Norm Smith Medallist
Well I'll be fact.Freo in 2015 was the last team that had a record of 11-2 or better. They were 12-1 and 137.8.
Before that Port in 2014 was 11-2 and 148.5, Hawthorn in 2013 were 12-1 and 145, Geelong in 2013 were 11-2 and 128.9, Collingwood in 2012 were 11-2 and 124.2, Geelong in 2011 were 13-0 and 145.1, Geelong in 2009 were 13-0 and 149.7.
The one team that fits most closely with your “true” 11-2 description is Collingwood in 2011 who were 12-1 and 169.7. But as the numbers show, that was an outlier among 11-2, 12-1 and 13-0 teams and no 11-2 team in recent history has done significantly better than Geelong in 2019.
Saints in 2009 were 13-0 and 177.5 which is the highest I can find on a quick search.