If reputation was the reason for Burfict's three game suspension, then the Steelers' organization should be banned for five years. The Saints' were given a death penalty. Nothing happens to the Steelers.
Burfict has a perfectly normal sack of Roethlisberger with nothing about it even bordering on anything illegal or any sign of intent to harm (other than to make the sack), and because the landing is awkward and Roethlisberger gets hurt, all of a sudden it becomes an illegal hit.
It's the same ole manure that has gone on with the Steelers and the NFL for 40 years. The Steelers not only get away with whatever they want, but the NFL encourages them to continue to do it, and when it's not enough, the NFL will make sure they get assistance from the referees whenever possible.