Great stuff James. Re the Blanda stat - it may be that interceptions mattered less in the AFL because of the prevalence of the long bomb. The AFL was known for long passes, and a lot of deep strikes could compensate for interceptions. Large numbers of long passes might also create more possessions per game because the scores happened more quickly. Also, if both sides are throwing more interceptions that should also tend to create extra possessions.
Great stuff James. Re the Blanda stat - it may be that interceptions mattered less in the AFL because of the prevalence of the long bomb. The AFL was known for long passes, and a lot of deep strikes could compensate for interceptions. Large numbers of long passes might also create more possessions per game because the scores happened more quickly. Also, if both sides are throwing more interceptions that should also tend to create extra possessions.