But you're moving the goalposts on what proof you need. You need very little proof to show a Steelers WR is a hit, and very little proof that a Patriots WR is a bust.
Let's say the Patriots WR group turns out to be very strong this year. Gordon stays clean and plays great, Thomas is reborn and Edelman is his old self. Even Dorsett has some big games. Harry comes back healthy but is deep on the depth chart. In half a season, he duplicates Washington's numbers: 16 catches, 217 yards and a TD. Next off-season all reports are that he's ready to step up into a bigger role. You'll never convince me you'd treat him anything close to how you're treating Washington right now.