Pretty good breakdown here:

<a class="bbc_url" href='http://www.rotoworld.com/articles/cfb/45952/349/2014s-quarterback-conundrum'>http://www.rotoworld.com/articles/cfb/45952/349/2014s-quarterback-conundrum</a>


Where Did They Throw the Ball?


The ‘zones’ in the chart represent where the QB threw the ball on the field, that is exactly the spot the receiver caught the ball. This is to make sure yards after the catch don’t influence our opinion on the QBs.







How Accurate Were They?


This requires a bit of explaining. The chart below represents each QBs accuracy in the individual target zones when adjusting for drops by their receivers. The colors represent how that accuracy compares to the ‘Average QB’, green is better than average, yellow average, red is below-average. Let’s get to it.






How Do They Do Under Pressure?


I’ve got quite a few stats for these QBs, but for the sake of brevity I’ve picked their completion percentage while being blitzed and under pressure to highlight. For reference, a blitz counts regardless of whether the O-line picks it up, but under pressure is when the QB is moved off his spot or has to get rid of the ball quicker than anticipated.


<a class="bbc_url" href='http://i.imgur.com/db0HWPQ.jpg'>http://i.imgur.com/db0HWPQ.jpg</a>


How Did Their Systems Affect Them?


My goal here was to take out the variability of systems they all played in. Thus, how would Derek Carr have performed in an average system? This is imperfect, but it gives you a feel for how the systems helped or harmed them. What I’ve done is taken out drops and then used the data to create an average system. The result is what their overall completion percentage would have been if they had played in an average system and the difference between the actual and adjusted completion percentages.

<a class="bbc_url" href='http://i.imgur.com/97DoRoS.jpg'>http://i.imgur.com/97DoRoS.jpg</a>



Target charts:

<a class="bbc_url" href='http://i.imgur.com/OpsdpWh.jpg'>http://i.imgur.com/OpsdpWh.jpg</a>

<a class="bbc_url" href='http://i.imgur.com/ihObIyP.jpg'>http://i.imgur.com/ihObIyP.jpg</a>

<a class="bbc_url" href='http://i.imgur.com/6OCwR9E.jpg'>http://i.imgur.com/6OCwR9E.jpg</a>

<a class="bbc_url" href='http://i.imgur.com/j9D8i40.jpg'>http://i.imgur.com/j9D8i40.jpg</a>

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