To save time and debate, I created an objective answer to who the best QB in the NFL is right now. Below is the statistical ratings for each QB, and the categories/weights used to conduct the data analysis. For a more detailed and custom view, download the file below the embedded ratings.
The following chart illustrates the statistical relationship between variables and Win %, an important dependent variable in this case. These insights give us reason to use EPA, QBR, ANY/A, PFF grade and Passer Rating in our data model to measure QB performance.
While measuring the relationship to wins in the same season is valuable, identifying the relationship to predict future season data is extremely relevant in this case. This gives us ideas for the weight of each category (which can always be adjusted), and PFF grade should clearly be the highest. Followed by a substantial gap with EPA and ANY/A and finished off with QBR and Passer Rating.