Josh proved he does not need a great WR room last year.
From November 1st through the playoffs (9 games, Bills went 7 - 2), Davis had 14 catches. 6 in the PHL game, so 8 catches in the other 8 games.
Diggs in my opinion gave up on the team. I have never seen a receiver go in for one play then raise his hand to go out as many times as Diggs did at the end of the year. He sure appeared to not give a sh*t.