Cam is not a bust, in the sense of being horrible or useless. He has to be used in a very specific way, and that style of play has predictably gotten his body beaten up. It's why no one wanted the college style running QB for so many years.

As a passer, he's a gunslinger who isn't particularly accurate. A completion percentage under 60% in today's NFL is pretty bad. You mentioned him having better numbers than Troy Aikman. When Cam's career is over, you'll notice that he'll have "better" numbers than a lot of hall of famers. That goes for pretty much any QB who starts for at least 10 years in this era. QB's are so sheltered by the rules now, and with all the emphasis on having to tackle a certain way, receivers have a lot more freedom. And aside from that, the NFL has gone through several offensive revolutions that have opened up the field for QB's.

Being a great QB is about being efficient, making all the necessary throws, and being able to adjust to different situations. QB's in Aikman's day did not throw it NEARLY as much as they do today. But if they were required to throw the ball 40 times in a game, the great one's could put up massive numbers. That just wasn't the preferred style and, again, defenses were MUCH more physical, because they were allowed to be.

So comparing stats with different eras is pointless. So far, Lamar Jackson is doing well and reminds me a ton of Michael Vick in his prime years with the Falcons. We'll see how long he holds up. That is always the question with that style of QB. It's exciting for a while, but these guys tend to flame out pretty quickly. An athletic QB who has reasonable accuracy is very difficult to game plan for, but when you run it like a running back, 15 to 20 times every game, your body breaks down like a running back. It's why I would never want to put my franchise on the back of a dual threat QB. Too much money involved to have your QB taking that many shots.