Didn't think we were on the same page. You mentioned characteristics of a couple different types of guys hitting a strong stat line and my response was, " He might (Which is an acknowledgement) But, we both know that his circumstances (team, scheme, QB) is HUGE there." The point I was making was that stat line presented (or any) is extremely reliant upon the above listed circumstances. And that's no matter whom the player.
BTW, let me also add opportunity to the list. Anyway, I learned playing fantasy football that Antonio Brown was a helluva lot more projective when Roethlisberger was a QB than he was with Steelers backups. And he was no better or worse a WR.
That's not the point, though. The point was that Welker was still extremely effective when he played outside the slot. The production was only illustrative of that. We both agree that team, scheme, QB, etc. all have a major effect on production. The difference is that people pin a guy like Welker's production on those factors rather than his ability. On the flip side, nobody says that about a guy who is considered to be a "true #1 WR." That's where I don't think people are looking at both sides of the coin. It seems like you're in that group. Maybe I'm wrong. But I think it's a bit unfair to point to those factors for a guy like Welker when you don't qualify others with the same sort of thing.
Yes, Antonio Brown is far more effective with Big Ben than Landry Jones and Mike Vick. That's also true of almost every WR who has played over the last three or so decades.(look at DeAndre Hopkins and Allen Robinson in 2015 vs. 2016) The position is reliant on QB play. Jerry Rice is the only WR I know of who is just as productive with backups, but I haven't run the numbers for most WRs, so there might be others.
Obviously, a guy like Randy Moss or Josh Gordon or Terrell Owens or Julio Jones or Calvin Johnson will be less affected by a QB change than a guy like Marvin Harrison or Antonio Brown or Isaac Bruce because the first group have a greater margin for error in how they produce. That all said, I'm not drafting a WR for how he'll play with my backup QB.
Getting back to Cooper Kupp, my issue is that I think you're too quick to impose limitations on guys due to perceived physical shortcomings. That's the issue I have. You don't seem to impose the same limitations on athletes lacking skill because you believe they can improve. My point is that technicians also can improve, and you quickly find that their physical limitations aren't very meaningful once they step onto the field. Which gets to my final point about people choosing either to credit everybody else for that player's success to refuse admitting that those physical limitations weren't meaningful, or they rationalize that player's athleticism.("Oh, he only runs a 4.6ish 40, but he has elite quickness, so he's actually a great athlete")
Memphis, I'm aware of Kupp's shortcomings. We might disagree to a slight extent over certain things, but I'm not of the belief that he's perfect. At the same time, I also recognize that his shortcomings are the sort of things that are often overcome by his strengths (technical skill, football IQ, instincts, work ethic, and enough athleticism in the right areas)
Frankly, I'd rather have an extraordinarily quick guy who has bad straight-line speed than an extraordinarily fast guy with bad change of direction skills/quickness.
EDIT: One last small point for me to make here. You talked about Cris Carter as a guy who developed the intangibles to succeed. What strikes me as interesting about that comparison is that Cris Carter was a 6'3" 208 pound WR who ran a 4.63 40 coming out of college. He was known for his route running and incredible hands. Kupp is 6'2" 205 and ran a 4.62 40 coming out of college. Kupp is also known for his route running and incredible hands. Just saying that it's a true coincidence that you chose Cris Carter for your athletic WR who figured things out in the NFL.
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