The problem with -4 per TO isn't so much that it inflates the value of a guy like Rodgers, it's that it completely kills the value of guys like Rothlesrapist and Stafford, et al.

Suppose Rodgers throws 3 tds 0 picks and Rothlesrapist throws 3 and 3... in 4,2 scoring the difference is 6 pts; in 6,4 scoring the difference is 12.

That's a big enough spread - that over the course of a season anyone that doesn't have Rodgers, Brady, or Brees is unlikely to be able to compete.

It's simply too big a variable at 1 position.