Precisely. Good (and mediocre) teams in the AL East inflated their records playing upwards of 18 games against the Baltimore Orioles.
The Rangers and Angels experienced a free fall by going through the second-half meat-grinder of the Astros (50-22, .694) and the Athletics (46-24, .657).
At the end of the day AL East teams were .500 in intradivisional play but below .500 outside the division. AL West clubs were .500 in intradivisional play but 34 games above .500 outside the division.