Ah, a code share, now I understand why you were confused. Award/upgrades are only valid for that airlines metal, it isn't a partner award search. That's why we have the following message at the top of the Award & Upgrade results:

"**NOTE** The Award & Upgrade information is only valid for flights flown on the searched airline (not code shares) and only when using miles/points/certificates from the searched airline, not partner airlines."