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

Trevor Lawrence has over 1000 more passing yards, 7 more touchdowns, and the same number of interceptions. I guess it is the 0.8% higher completion percentage that Dalton has on Lawrence that puts him so much higher...
Hasn't Lawrence also played in 4 more games than Dalton? So if Dalton is averaging 1.5 TDs a game along with 218 yards...that would give Dalton 872 more yards and 6 more TDs to go with his current numbers.