To be fair, the 90s Cowboys were centered around that beastly o-line and Emmitt Smith. They didn't really need another #1 opposite Irvin, even though they had a young Jimmy Smith yet to his stride.
The Bucs were left off that list as well (Evans, Godwin, Brown)
The crux is, with the Bills current brand of football, the "top flight WR corps" route would be most beneficial.