RE: QANTAS FLIES AIRBUS A330 NONSTOP FROM EUROPE TO AUSTRALIA

Possibly, though Biz class pax may conversely have heavier cabin baggage as there is often a laptop to accompany the briefcase.

And I know of a few people who swear blind that it’s cheaper to fly Biz class (with better and more flexible weight restrictions) than fork out for excess baggage charges in Economy!