Honestly, I wish people would just let this notion die. Levy's Bills were favored to win the division year in and year out, they went to 4 consecutive Super Bowls, there were pro bowlers at every position and several future HOFers, Levy didn't need to do much in the Preseason.
This team, however, needs to prove it can play competent professional football. They're a far cry from that. So, yes, these preseason games mean a little more. Should they win them all - no. But, would't it at least be nice for them to look competent?