If singular offseasons automatically dictated records, the Denver Broncos would be as much of a contender for the AFC West crown as the reigning division champion Kansas City Chiefs and Los Angeles Chargers, who both won playoffs games a season ago while Denver went 6-10.
No, the Broncos didn't have an all-time awesome offseason, but they had the most impressive team-building period of any team in the division,

and I don't think the gap was that wide other then coaching
we split the dolts and should have split the chiefs if CK could have actually hit a wide open DT for the winning score