The route will be flown by 777-200s.
I don't reckon so - the product difference between the A330/-200/-300 and the 777-xxxER and A380s is massive - especially with the crowd they'll be trying to impress.
My pet SIA peeve is that you can, from week to week, get totally different in-flight products (lie flat beds with privacy vs crappy old 'traditional' business class seats) on the same route at the same price.
......I know...... first world problem...... but their high value CBR and WLG government types will not settle for the dross when they can pop over to Sydney and get the service they 'deserve'.