Kevin Punter and Wade Baldwin both averaged about 15 points this season. On paper, the same scorer.
Punter scored 43 in one game and 2 in another. Baldwin gave you around 15, most nights, without the swings.
Same average. Opposite players. And the number everyone quotes, the season average, is the one that hides it.
What we measured
An average tells you where a player lands over a season. It says nothing about the ride. So we measured the ride: game by game, how far each scorer's points bounce from his own average. A small bounce means he gives you the same thing every night. A big bounce means he runs hot and cold. (The measure is called coefficient of variation. Standard maths, not ours. Just read it as "swing." Lower is steadier.)
Two rules to keep it fair. We counted only games a player actually played, 15 minutes or more, so foul trouble does not fake a slump. And we weighed only players whose job is to score, measured by how many shots they take. That leaves out a pass-first guard like Facundo Campazzo and a defence-and-rebounds big like Josh Nebo for the same reason: scoring is not the bulk of what they do, and the shot count says so.
Rank every scorer that way, and the league splits into two kinds.

The steady end
Nadir Hifi is the highest-scoring guard in the league and also one of its steadiest, which is not what you would guess. The big volume scorer is supposed to run hot and cold. He does the opposite. Sasha Vezenkov sits right behind him: 19 a night, 6 to 29 all season, an elite scorer who is also a sure thing.
Look at the position column. The steady end fills up with forwards and big men. A dunk repeats. A free throw repeats. A 25-foot jumper does not. Across every scorer the averages bear it out: centers swing 0.38, forwards 0.41, guards 0.44. The men who live near the rim give you the same thing more often.
The streaky end
Boom or bust. A 40-point night out of nowhere, then a quiet one you forget by morning. This is not a lesser player. A streaky scorer wins you a game you had no business winning, the night everything falls his way. That is a weapon a steady scorer does not have. Streaky is not a flaw. It is a different bet.
Steady is underrated
Nobody makes a highlight of the guy who gives you 15 every night. The reel belongs to the 40-point explosion. Steady does not trend, and it is the most underrated thing a scorer can be. A long season is won by the number you can count on, game after game, the quiet contribution nobody circles.
But look again at the top of the streaky list. Evan Fournier. The most boom-or-bust scorer in the league, a 2 one night and a 36 the next. And also, if you read why he turns it on when it matters, the man who saves his best for the games that decide a season. His scoring swings. It just swings up at exactly the right time.
That is a different question than this whole piece has asked. Not how much a scorer swings, but when. A streaky player whose biggest nights land in the biggest games is not unreliable. He is clutch, and the players who show up when the margin is thin are a study of their own.
So there are two ways to be a scorer your team can trust. Give it to them every night, or give it to them on the one night that matters most. One wins you the long season. The other wins you the trophy. And we only ever make a highlight of the second.