I don't know how many times the team with the worst record has won the WS, and I'm too lazy to go through year by year to find out. I am sure that it's not as many times as the best team has won. The stat that correlates best with postseason wins is regular season wins, so the better teams do have a very slight advantage, with the emphasis being on 'very slight'. It's not enough of an advantage to be statistically significant.
I posted before that the best team in the playoffs each year has a winning % of 55.7% in the postseason, while the worst team has a winning % of 53.2%. In a 5 game series, that equates to the best team winning 2.785 games, on average, and the worst team winning 2.66 games. In a 7 game series, the split would be 3.899 to 3.724. If all series went the distance for a total of 19 games, the split would be 10.583 to 10.108. That's virtually a coin flip.
All that said, the bottom line for me is that there is no correlation between regular season anything and post season wins. That means that post season wins are very largely random. Until somebody can provide me with a statistical correlation to postseason wins, you are not going to convince me otherwise. And with all due respect to Moon, listing examples in support of your opinion is not showing a statistical correlation.
So, for the 3rd time, I am bowing out of this debate. Until, of course, you pull me back in with another question.