No you didn't. Stats dumbed down like that don't mean anything. Perhaps you didn't notice, but the AFC east played the weak NFC west and AFC west last year. In any case, stats rarely tell the whole story.
Here's a hypothetical scenario. A team not from either division plays all 8 of the teams in question this year at a neutral site. Anybody who knows anything about football would predict they would come out with a better record against the AFC east teams rather than the NFC east.
Whenever I hear over-simplistic arguments like yours, it reminds me of a sick joke I once heard: "Statistically, 5 out of 6 people enjoy gang-rape...that doesn't make it right".