Ignoring the poll error, Ed did say towards the beginning of the series that he's never won against Al. Oh course after the series Ed would probably win
due to Al's body being severely weak at the end of Brotherhood after being stuck behind the gate for so many years. In the 2003 series Al's body was still 10 when he got it back, so it would probably be a few years before he could stand up to Ed in that version as well.