I booked a F class award on EY using AA miles LHR-SYD for next month

The AA website says 80k
The agent tells me 100k (40k to AUH and 60k from AUH)
So I ask her why and she says it is because EY is not in OW

Now I have booked JFK-DEL awards on EY and it has been the same as a BA award in miles (but less copays/fees)

Is the agent simply making it up?

I called again.
The next agent tells me it is because it is going to a third region.
But there are no nonstops between LHR and SYD anyway!

Going on Cathay is 70k + 45k in F!
So what is the 80k award used for from EU to Australia?