Reaction and motor performance can differ across age groups, but an individual browser result is influenced by far more than birth year.
Task experience matters
Someone who uses a mouse for hours every day may have an advantage in a cursor-control game over someone who rarely uses one, even when the two people are the same age.
Hardware can overwhelm small differences
A slow display, unfamiliar trackpad, or different pointer sensitivity can change performance enough to make casual age comparisons misleading.
Keep the conclusion narrow
Human Precision does not use age-adjusted scoring. The leaderboard is a game ranking, not a developmental or medical reference chart.
Educational and recreational information only. Human Precision is not a medical, psychological, or professional assessment.