Why Didn't Our Magic Speaker Win? Was It Judges' Bias?

I find a big problem is that the club's star speaker, the person who you think should be a winner, with the best speech, does a new speech and suddenly goes to pieces. Or they run over time - even at the international finals in Las Vegas. Or they are on holiday or away on business on area contest day. They change their speech at the area contest, or the next level. So an inferior speaker who is on top form with a repeat  of a mediocre speech ends up as winner.
Everybody there at the time or hearing the result afterwards, thinks the judges are nuts or biased. Why did boring old so and so win, the man or woman who relied on their own hand gestures for props? Why not our magical, most amusing speaker? Our favourite performer - the one with the bear costume which muffled his/her voice, the guitar whose string snapped, the candles which blew out, and the 25 props he/she drops. The poor judges had to go with the speeches they saw.
If you could video the speeches and send in the top quality speech by your club's best speaker, the results might be what you expected, not the dull person who is guaranteed to turn up, but the sparkling, erratic character you expected to win would win.