First, the San Francisco 49ers were buried under a western New York snowstorm.

Then they were buried by the Buffalo Bills.

Behind four total touchdowns by quarterback Josh Allen, the Bills routed the 49ers 35-10 on NBC’s “Sunday Night Football” to clinch a playoff spot and win Buffalo’s fifth consecutive AFC East title.

The Bills’ dominant team outcome was the product of Allen’s individual brilliance. Given a prime-time opportunity to boost his candidacy for the NFL’s Most…