The following are the starting QBs and contract value ranks of all the current division leaders:  

• Saints, Drew Brees (7th)
• Redskins, Alex Smith (9th)
• Steelers, Ben Roethlisberger (12th)
• Patriots, Tom Brady (16th)
• Bears, Mitchell Trubisky (26th)
• Rams, Jared Goff (27th)
• Chiefs, Patrick Mahomes (35th)
• Texans, Deshaun Watson (39th)

These average out to 21.375. Half of division leaders have a QB on a rookie deal, and only 2 of the 10 highest paid QBs are leading their divisions.  

Let's look at the combined current record of the top 10 highest paid:  

• Aaron Rodgers, 3-4-1
• Matt Ryan, 4-4
• Kirk Cousins, 5-3-1
• Jimmy Garoppolo(inj), 1-2
• Matthew Stafford, 3-5
• Derek Carr, 1-7
• Drew Brees, 7-1
• Andrew Luck, 3-5
• Alex Smith, 5-3
• Joe Flacco, 4-5

Total of 36-39-2, not exactly what you'd expect the ten "best" QBs to look like in the win/loss column.  

I believe that some teams are already starting to realize that rookie deal QBs are the best way to have major success these days, with the inflation of veteran QB contracts, and the restructuring of the rookie contracts. There's been a slew of young guys with major success that all of a sudden fizzle out when they get their big deal (edit: I mean to say their teams have less success, not that their individual performance drops). Russell Wilson, Joe Flacco, Derek Carr, even Cam Newton to an extent have all struggled to get back to where they were after inking new deals.  

The problem with franchise QBs is their marketability often drives the price higher than performance would otherwise dictate. People want to come see the QB, and having one that puts fans in seats and makes people talk about your team is often more valuable than racking up wins alone. I believe if the NFL was really about winning only, far more teams would refuse to resign franchise QBs because from a football perspective alone, paying your QB highest paid player money often does not translate to wins, and their quality cannot possibly live up to their price tag, which is why we have to see players like Aaron Rodgers consistently carry a rag tag group of misfits on their backs.  

Which brings me to my final point. The nature of contracts in the NFL produces a shitty situation where all time greats who don't take pay cuts are forced to accept shit teams, instead of being able to achieve greatness. I think, and this is probably controversial, that every position should have a set salary range. This would artificially depress the salaries of exceptionally good players, and allow them to actually shine instead of crippling their teams under the cap structure while trying to succeed without given any support to do so.  

Tldr: Cheap QBs are being unreasonably successful, despite not necessarily being the best in their positions while good QBs are hurting their teams by not agreeing to take less money (who can blame them), and my solution is to set fixed salary ranges for every position so that decent teams can be put around great players.

Edit: really I'm just tired of seeing good, great, and generational QBs struggle to stay .500 because their teams are shit.