ESPN Article on rule
The article lists the Pittsburgh Steelers as a team that will benefit from the revised rule because of underneath routes/the system they use and the types of WRs that they have.
Of course, any reporter worth his salt would figure out where the OC for the Steelers is this year, and prospect that Buffalo would benefit as well, but that would require research.
With Moulds, speed with Evans, underneath stuff with Reed, and a good changeup in Shaw and some of the younger guys, I can't see how this won't help the Bills.