And yet it did take Kubiak four or five years to develop a good team in today's NFL.
Clearly, it really isn't that simple.
A lot of the results of the first three years come from whether the team was doing a complete rebuild - if they were, they'll suck for an absolute minimum of two years and more likely three - and how good the draft pick they had was in the first year - if they had the first overall pick they're more likely to be able to bring in a QB who can get the team going quickly - as well as how good the talent on the roster is.
Buffalo had poor talent before the rebuild and abysmal talent after it, they didn't get a top three pick that first year, and they were doing a complete rebuild. Teams in better situations generally have better results.