Does WorldClub membership factor in at all? I was boarded and settled in 9A yesterday afternoon from ATL-MEM. Just before the door closed the GA came to my seat and upgraded me to FC. The guy sitting beside me was a Gold who was also on FC standby but I'm a Silver w/ WorldClub membership and I got the upgrade.

I'm not complaining, just wondering if it was a computer glitch or if WC factors in somehow.