Why are you only using the last 4 years? Because if you said the last 5 years it would include a 4,900 yard year, so you just want to leave that one out like it didn't happen huh?
So, please tell me how 4,100, 4,300, 4,300, 3,600, and 4,900 (all rounded because easier on the eyes) does not equal around 4,300 when you average it out?
Actually, you can't say that about Dak, because Dak has never reached those numbers, therefore it's not possible to have those numbers as a reference point. Also, this is not what Kirk Cousins was "on pace" for. These are real numbers and not hypothetical made up numbers, so no, you cannot say that about Dak because it's just flat out false.