I've tweaked my simulator that I used in 2015 and simulated the World Series 10,000 times, and predict the Dodgers win it all in 6 games. So if you want to read too much into an extremely small sample size of 2014 and 2015, that means the Astros are winning it in 5 or 7.
My ratings are very in line with Baseball Prospectus, and have the two teams as fairly evenly matched:
LAD: 0.604
HOU: 0.592
So this series should go 6 or 7 games: