Andy Dalton is PFF’s 2nd highest graded passer this season

Andy Dalton is PFF’s 2nd highest graded passer this season

I am not going to bring up rushing (even though it is an integral part of Hurts' game), because the tweet in the OP says passer rating, and skip W-L records as well. But just passing:

Code

Burrow  68.2%  3,885 yds  7.6 avg  31 TDs  10 INTs
Hurts   67.3%  3,472 yds  8.2 avg  22 TDs   5 INTs
Dalton  66.8%  2,403 yds  7.6 avg  17 TDs   7 INTs

In what world is Andy Dalton rated higher than Hurts and Burrow?
PFF world, I guess.