The OP has an AC membership, which includes certain lounges with OW partners. Additionally, as an EXP flying Internationally the OP would get OW F lounge (or J lounge when no F lounge available) entry.

As others have noted his EXP status would carry over for items such as checked baggage allowance, priority boarding and check in. Possibly QF and BA lounges (not OW) not part of the AC Reciprocal AC lounge agreement is what the OP is referring to?