OK...this much I've gathered from you so far...obtuse is your favorite word.
I'm sorry, that was showing lack of intelligence and sensitivity....but really...on the WRS in the first.
I look at what is considered the 3 top 'skill positions', QB, RB, WR. I'm sure all 3 would have less than a 50% boom rate. But that's what makes it considered a skill position to begin with.....it is very difficult to master those skills at the NFL level to at least be considered a serviceable player, let alone a boom. Because they are not booms, does not make them busts. You should at the very least break them into 3 categories, while also listing those same rates for 2nd through 7th rounds in the same time period.
Let's say you move to a new community.....you need a good mechanic, and someone to cut your lawn. While it may be more difficult to find a good mechanic, you don't put them down your list to grab someone that's good at cutting your lawn simply because you'd have a better chance of succeeding by finding him early.
Your skill positions are your mechanics....the rest mow your lawn and trim your hedges. Your lawn may look great.....but not so much if your car is on blocks in the middle of it.