The problem with this is that probably 4 of the top 5 teams in the AL play in the East. Really, I'd take the top 4 teams in the AL East over any team in baseball except for the Angels and Cubs (and maybe the Phillies). No one's going to call the season the White Sox or Twins had 'miserable', but they'll finish with worse records than the Yankees (are barely better than Toronto).
The Yankees are 21-19 against Central opponents. Hardly the domination you think. I'd rate Chicago, Minnesota, Cleveland and even Detroit comparable to Yankees and Blue Jays, even if the records don't show that. Boston and Tampa though? Miles ahead of the Central. Same for Angels.