Let's throw in another QB who liked to run.
Culpepper 6'4" 260 sacked 188 times 427 rushing attempts. First 5 years of his career.
Donovan McNabb also has a similar trajectory of declining although not as bad as Culpepper or Newton after their first 80 games. As well as getting hurt.
It's a trend among QBs who take hits, either by sacks or taking off and running. It should be a concern for all of us with Josh going forward. And we should all hope that there are less designed runs for Josh and that when he does run he learns to slide or get out of bounds, not hurdle over people.