To see just how dominant Rodgers has been this season, take a look at the chart below. The chart shows two of the most important stats for a quarterback: 1) How many yards does his team gain every time he throws the ball (using Adjusted Yards per Attempt); and 2) How many more touchdowns does he throw compared to interceptions (using Touchdown-to-Interception ratio).
In the chart, dominance increases from the bottom-left to the upper-right.
While most quarterbacks are clustered together in the same area, Rodgers is off on another planet all by himself and he is doing it on a Super Bowl contender. That's why Rodgers is going to win the MVP this year even though JJ Watt has shown a similar level of dominance at his position.