Just doing some research...
Coopers Pale Ale: 4.5%, 375ml, 1.3 std drinks - Stuster ratio: 0.77
Little Creatures Pale Ale: 5.2%, 330ml, 1.4 std drinks - Stuster ratio: 0.82
James Squire IPA : 5.6%, 345ml, 1.6 std drinks - Stuster ratio: 0.83
Results inconclusive.
Research continuing...