And are the 'upgrade' awards upgrade mileage awards?

Or stickers used?

Or complimentary EXP upgrades.

You already invalidated your hypothesis by saying 'presumably'!

And how many OW pax were flying AA on OW awards (BA pax flying on AA).

Statistics lie more than [insert (suggestion politician - I did not have SEX with) ...or Gate AAgent (there are no upgrade seats left) ... or ...]!