AA is generally considered a far better freq flyer program than QF, but if you fly QF more and want to partake in the upgrade lottery, QF may be better for you. Especially since you QF 52K points and silver status. Would take many flights to get 30K ~ 40K AA miles

If you have AA miles they cannot be used to upgrade a QF flight.

With QF, it is notoriously difficult to get points upgrade. You do not known if your upgrade request [upgrade lottery] has been successful until just before the flight. And they cost a lot of QF points.

At times a straight out reward redemption with AA miles (on a QF flight) is far better value (and its assured). QF redemption can be difficult to impossible if you are not flexible with dates and/or route. High points cost and very high $$$ co payment fees (compared to AA)

Some low cost QF flights do not get AA miles in the AA program.
All QF flights do get QF points in the QF program.
I have no idea which CX fares get QF points in the QF program. Check the QF web site)
But some QF fares (buckets) are not able to be upgraded with QF points

Be aware that your QF points will expire if you do not have eligible QF activity in 18 months. Expiry after time happens in most programs. Need to log into the airline web site to check. Hard copy freq flyer statement now rare: costs airlines too much real money

Better to ask on the Star forum They have a sticky thread on the top of the page about ffp. Gets good response from several posters (better than here)

Number of bags / allowable weight varies a lot. You just need to check carefully before making a reservation.