Don't kid yourself. Unless Weeden goes crazy, Cleveland would jump at the chance to draft a franchise QB. There are at least several other teams who would jump at a franchise QB if there are more than 1-2 to go around at the 2013 draft. Seattle, Arizona, Tampa off the top of my head.
The bills play enough crap teams, that they will finish with a 7-9 record, and end up picking somewhere around 10 -15.