Anyone who was a fantasy star at some point will get this response, especially WR's. The main difference between the Bills and Pats is Belicheck and Brady, not a guy they brought in for a look. If you look at how Buffalo is managing their roster right now, it is more "Pats like" than ever. A lot of one year deals, cheaper, lesser known guys who are hungry. They are not unwilling to move on from people, etc.
Other than that the two teams are in opposite stages of life. The Pats are looking for plug in guys to help win an SB while the Bills are looking for core talent to build around.