I have a bit of a disagreement with stats in a lot of cases. It's definitely there with kickoffs. Let's assume that a player has 50 kicks he returns during the course of a year. Let's say he averages 30 yards per return. Simple math tells me that half the returns will be over 30 yards, and the other half, under 30 yards. So, it sounds good.
A couple things wrong there. All the kicks he returned from inside the end zone do not end up putting the ball on the 30. In fact, the starting point on the field for the offense wouldn't be the 30, as people might guess, but somewhere closer to the 25 yard line. Granted, there will be a couple in there as well, where the ball is fielded outside the end zone, so that would skew the starting point too. But, based on today's kickers, that would be rare, compared to those caught short of the 30 yard line.
The funny part about kick returns is that of that 50 you did this year, you took one 105 yards for a TD, and had 4 more you broke for 75 yard returns, from 5 yards inside the end zone. You get a net 70 for each of them, but in the stats? You get all 75 yards. That's a total of 405 yards for those 5 kicks. Since you're averaging 30 yards per return, with those included, it skews the figures. Subtract them from the rest, and you now have an average of 23,8 yards per return, and if the average distance in the end zone is 3 yards, your true average is 20.8 yard average, and I'd be willing to bet a shiny penny that in the area of 2/3 of your returns will be short of the 25.
That tells me that there's too much risk, because there are no positives you can add to these figures, but there is a negative, if there's a penalty. It makes matters worse.