Unlucky,
Any fleet in QR is the "place to be" in the Middle East.
QR's a320 fleet beats that of any other in the Middle East.
Only comparison would be EY's, and QR's beats it anyday.
It
is hectic,
far from perfect, it beats any other airline's 320 roster though . (just incase you are put on the a320)
If you have already been assigned the a330, there is nothing like the long haul flights in QR compared to any other airline IMO.
You will have made the right decision.
You will not be unlucky
Good Luck!