The most consequential goals of an American soccer season are scored in the postseason, and none of them count toward the scoring award. The separation is deliberate.
The award measures a common schedule
Every club plays a regular season of the same length, which gives each striker roughly comparable opportunity to accumulate goals.
Postseason participation is not shared. Some teams play a single match and others play several, so including those goals would reward qualification rather than scoring.
Excluding them keeps the measurement on the only part of the calendar where all competitors faced a similar number of chances.
The bracket rewards a different quality
Knockout soccer is defended more cautiously, played at higher intensity and often decided in narrow margins, which suppresses scoring across the board.
A forward who scores twice in a tight elimination match has done something more valuable to his club than a forward who scored twice in a routine league win.
The scoring award cannot express that difference, since it counts goals rather than weighting them, and adding postseason totals would blur the measure further.
Two kinds of reputation result
A player can lead the league in goals and be forgotten by December, while a forward with a modest total who scored in a final is remembered for years.
American sports culture leans heavily toward the postseason, so the second reputation carries more weight with the general audience than the award does.
Strikers understand this, and few would trade a championship goal for a scoring title, which tells you which the sport actually values.
The gap distorts contract and transfer conversations
Clubs evaluating a forward have to decide how much of his record is regular-season volume and how much is performance in decisive matches.
Small postseason samples make the second impossible to measure reliably, so a handful of matches can move a valuation more than they should.
Analysts who insist on rate statistics across a full season are pushing against a culture that has organized itself around a short elimination tournament.
Other competitions add a third column
Domestic cups and continental fixtures produce goals that count in neither the scoring award nor the postseason narrative, and they are often overlooked entirely.
A striker can have a substantial season across all competitions and appear ordinary in the only table most people read.
Which argues for stating clearly which total is being discussed whenever an American forward's season is compared with anyone else's.