Well one thing to consider is the situation, coaches, scheme, team a QB is drafted into.
Many may have the ability but are put into what turns out to be a bad situation, so they never win championships.
It may not always be they are a bust or dont have the talent etc.
Rodgers was the luckiest one, he got on a good team with good coaches, who were already winning, and he got
to learn and be a bkup for 2-3 years.
Some go to a team with bad OL, and not any good wr or run game.
Some have stupid coaches or are forced into a system that doesnt fit them.
When RG 3 was in his rookie season, he was pretty good, but his coaches let him keep running and not sliding, he kept taking hits.
I said to myself at the time, they should bench him to get him to slide or run out of bounds, and couple weeks later
he hurt the knee.
Just imagine if you were a QB today, and got drafted by cleveland or some other bad team that you didnt want to go to,
and you knew you didnt fit what they run on offense.
There are many teams I would not want to be drafted by, and due to JG , I dont think I would want to play for him.
It would be very hard for any QB we draft to be good in JG's offense.
If we got Rodgers, he would struggle, or ad-lib things to make things work, but would probably retire to get away.
I think if you draft a QB who was good in college, you need to build a offense for them, and have some similarity's to what
they ran in college.
but most coaches have their "system" and force that on the QB they draft or get.
My point is many times the coaches are the problem not the QB, and then if it is a bad team,then what can you expect from the QB?