I can only think of it as a move to show travelers how pricey, expensive the competition is ... looking at the fares from QF, AA, SQ etc ... Although SQ is not technically a competition, but VA is not in any alliance as well ... and with the industry moving towards bilateral arrangements rather than being in an alliance - I'd say a smart, money making move from VA (obviously, if and when it works)
By showing the public how cheaper air fares can be, especially, from a full service airline, which isn't in an alliance, VA could get more customers, more businesses might consider signing up with VA, especially those that have their folks fly to the States and Asia for business and prefer to fly full service
Not sure how much thought was put into this or if this was the work some work exp kid in VA