Major League Baseball (MLB) Inter-league 2018 Recap

The surest outcome in sports had been that American League (AL) teams will win the majority of inter-league matches against their National League (NL) opponents. 
After a 21-40 start, the AL crawled back to finish the regular season at 143-158 (including the AL's All-Star match victory). This is the year that the AL finally struck out. The AL lost to the NL for the first time in 15 years. See Neil Paine of 538.com:

https://fivethirtyeight.com/features/the-national-league-finally-is-getting-some-interleague-revenge/ 

I stood by my faith in AL superiority and picked the AL Boston Red Sox to win the World Series (WS). Including WS and All-Star matches, the AL finished 2018 at 147-159 against the NL.
The AL had been the superior league by far for more than a decade. The AL had 14 consecutive triumphs over the NL from 2004 through 2017. 
Over the full period of dominance from 2004 through 2017, the AL won 54.66% of all matches -- regular season, all-star and World Series. 
Nevertheless, over this 14-year period of AL dominance the NL and AL were tied 7-7 in World Series triumphs. Over this period, the AL has won 40 of 76 WS matches or 52.6%. The NL has had the good luck to distribute its WS match wins efficiently enough to end up tied 7-7. 
Over a longer period from 1983 through 2018, the AL representative has won 21 of the past 35 World Series. Another indicator of the AL's long-term dominance is the fact that the AL has won 6 all-star matches in a row, 18 of the last 21 all-star matches to reach a decision and 24 of the last 30. 
Before 2018, the only positive sign for the NL was that the AL's 53.7% inter-league average (including All-Star and World Series matches) from 2010-17 was below the 55.9% average from 2004 through 2009. 
And, with the Chicago Cubs, LA Dodgers and SF Giants now run by AL-analytics-alumunae, the years of NL inferiority may be over.