HOW MUCH QUARTERBACKS SCORE HAS VERY LITTLE TO DO WITH THEIR VALUE.
It's all relative. Its the difference between players of the same position that assign value.
Whether you score 10 points per passing touchdown, 6 points per passing touchdown, or 3 points per passing touchdown, it doesn't change the value of the quarterbacks in question.
IE
Culpepper is no more valuable than Drew Brees in a league that scores 6 points per passing td than he would be in a league where as he scores 3. Why? Because each quarterback's point value goes up the same percentage.
Value Based Drafting Is Your Friend.