Tallying how many points and rebounds players accumulate is a poor way to measure their effectiveness. Mainstream sports outlets still tout 20-point games and 10-rebound nights, but these metrics fail to understand the nuanced way in which a player got to those totals.
If it hard to know whether a player who scored 20 points actually played well unless you know, for example, how many shots he took. While a 10-rebound game is never a bad thing, it is a lot less impressive if the guy played 40 minutes in a game in which the opposing team missed 50 shots.
It isn't that "advanced" stats are the be-all, end-all of understanding basketball, but looking at shooting efficiency and rebound rate (the percentage of boards corralled out of the total available) provides a deeper knowledge of how players actually performed in the game.
While individual metrics like PER and plus/minus also have their place, I find that the simple advanced stats most accurately measure a player's production.
With that in mind, here are a few players I consider to be underrated and overrated based upon the perceptions generally held by those who look at traditional box scores.