Sorry I missed this earlier.
To give you some numbers:
1) a QF redemption is available from Osaka to London (KIX->DXB-LHR) for 45k points in Economy, plus 16830 JPY (~$215), and currently partially available in May on Emirates A380. Connection time is about 6 hours.
2) a QF redemption is available from Paris to Brisbane (CDG->DXB-BNE) for 60k points in Economy, plus 325 EUR (~$515), and currently well available in Oct/Nov on Emirates A380. Out of London, same points, and 270 GBP (~$485). Connection time is about 2-3 hours.
As all these are the Emirates 380 I'd rate it as preferable above the other flight options discussed. That said, with the numbers you can see there's still a price to pay, and the saving isn't massive i.e. it still comes to ~$700, plus the credit card fee (note there are deals at times that waive the fee).
I didn't get any results returned for BA or QR on the dates I checked. I would say I don't believe any negativity for the customer experience on QR is justified, but it may be a moot point.
Thus, not a huge saving if just looking at cash value, especially as it can reduce flexibility, but if you look at connections, comfort, and peace of mind they also have a value, but is subjective. Some would prefer to use that number of points on other things providing a higher return though.