Agreed!
Not that numbers are everything. But, since you brought up raw yards without context. Let me try to add a little context.
Sammy Watkins ranks 76th in raw yards. When you adjust for games played, his 55yds/ game now becomes 43rd. When you adjust for the team, playcalling, QB, style of play, he rises to 25th, his adjusted yards per game is now 70. How did I get this? The average NFL has about 250 yards receiving per game, the Bills are 200, and adjustment of 1.25. You could adjust further, like Sammy played only about a quarter against Miami, but I'm not going to. BTW, the top guys are Stefon Diggs, Antonio Brown and Alshon Jeffrey. Beckham is in between somewhere. The top WR from last years class right now is Mike Evans at an adjusted 91/game.
Another mistake people make with numbers is they represent only what has happened, not what could happen in the future because of the players potential-which is a scouting issue.