True about dartboard, but the issue is mainly about the order of the ranking. The #47 recruit may be better than the #5, but we seldom, almost never, see an all-american from outside the top 100.
UConn's entire team now is top 100s, probably even top 50 if recall right. It's not like Geno is sneaking around gyms getting off the radar recruits.
SC, ND, LSU, UCLA, Stanford, TX, USC all have teams stocked full of McDonald's All Americans. No surprise, these are the best teams.
The rest of the Big East, Gonzaga's WCC and other small conferences rarely even get 1 top 100 recruit. Again no surprise, that's why they are bad.
The ranking services are not perfect, but that makes great discussion for fans and motivation for players. The rankings do get the big picture right in finding the best 100 players.