If you give houston a 60% chance each game it’s 98% to win a best of 101. Obviously it won’t be literally 100% but as the sample gets big, the odds approach 100%
Closing the roof provides a big home field advantage, there was a huge controversy back in 2005 as well. Seeing how you just became a fan, didn't expect you to know that.
What assumptions are you using to say the Astros had a 60% chance of winning each game? That would be equivalent to this years Astros chances against the Angels or Twins, not against a team in the World Series throwing Scherzer/Strasburg/Corbin.
I've never seen a man swing on the first pitch twice, and strike out looking twice, in the same two ABs.