Having only ever flown the 330 it is a bit hard to compare, but there are a few clues from this that should have warned the crew that something was amiss. The Flex temp of 74 degrees should have been one of them.
This aircraft was also passing taxiway Echo when the 100 knot call would have been made. To an Aussie airbus pilot, that would have been very much a red flag; maybe not so much for a foreign pilot.
I can only conclude that fatigue may have indeed been a major factor here.