Technically correct, but Elway was throwing the ball to Shannon Sharpe for ten years; Rod Smith was very good and so was Anthony Miller. Elway, like Marino, had targets but no great running back for most of his career (of course, TD changed that and helped Elway get his rings).
I only know this because as a Chiefs fan I watched Elway, Sharpe, Miller, and Smith continually wreak havoc on a great Chiefs defense in the early and mid-90s (Derrick Thomas, Neil Smith, Dale Carter, Deron Cherry).
I was really impressed with Rodgers until Flynn came in and put up 480 against Detroit; that planted a seed of doubt and I am now wondering if Rodgers is just a system QB and McCarthy's system is just that good.
Sharpe just left my mind. He was really one of the very first TE you can rely on as a #1 guy. My mistake.
It's so hard to pick "the greatest" because teammates are so important, and the coaching staff has the biggest impact on the game. I mean, switch Elway to San Fran and Montana to Denver, and they aren't as successful. Switch Peyton to New England and he probably has three SB, while Brady has one. It's too hard to pick. It's why nobody ever can pick greatest NFL player ever.
I like Elway, and he had all the physical tools, but I doubt he'd be getting this many votes if he didn't win an SB. I don't think you can argue that Elway was the best player on those championship teams. I'll never be able to understand why SBs are weighted so heavily in QB evaluations.
BTW, Elway only threw 20 TDs 6 times (career max = 27). Career 57% passer.