From the article:
Vick’s 14 red-zone drives have produced five touchdowns and seven field goals, or 56 points. That’s a touchdown 36 percent of the time and an average of 4.0 points per red-zone drive.
Foles’ six red-zone drives have produced four touchdowns — just one fewer than Vick in fewer than half as many chances — and two field goals, or 34 points. That’s a touchdown 67 percent of the time and an average of 5.7 points per red-zone drive.