The funny thing about these narratives is that some believe elements, in this case bad weather, shouldn't have any impact on Josh? That's ridiculous. Bad weather impacts everyone. To think Josh is an exception is crazy.
The real story is how well do the coaches adjust the schemes, both offensive and defensive, to adjust to the elements? If the Bills game plan for cold wet weather is the same game plan for warm dry weather, of course the results will be different.
Additionally, the goal isn't to keep Josh's, or anyone else's, stats high. The goal is to win. Those adjustments impact an individual's stats.