Quarterly/Yearly ticket comparisons unfair

A typical Australian worker has four weeks' annual leave.
Therefore, a yearly ticket should be compared to 48 weeklies, and a quarterly ticket should be compared on the basis of 12 weekies.
Since Opal is pay-as-you-go, users do not pay in the weeks they are on leave.

Obviously this is still not a perfect comparison and doesn't take into account everyone, but it would be slightly fairer.