The European Championships recently held in Pazardzhik, Bulgaria would be a fair comparison since they used the current 3mm venturi. Perret/Perret flew just one semi
going in as an alternate with 3:17.7 The fastest qualifying time to get in the semi round was 3:11.3 It took a 3:10.6 3:11.7 3:12.4 to make the final.
Remember, Europeans only, no fast Aussie teams were present.