Distinguishing between winning/losing because of genuine analytical edge (skill) versus random fluctuation (variance) — and maintaining correct behavior regardless of which is currently dominant.
You use xG-based process evaluation to assess bet quality independent of outcomes. You know that "football is a low-event sport" where variance is enormous. You understand realistic edge ceilings (7-11% hold in best seasons). You don't change strategy based on short-term results unless process analysis supports the change.
"The bets went 3-5 but the PROCESS outcomes went 6-2." Elite bettors rate every bet thumbs-up/thumbs-down on process quality independent of outcome. This is how you distinguish skill from luck — and it prevents the two most common errors: abandoning a winning strategy during a cold streak, and persisting with a broken strategy during a lucky hot streak.
120 tipsters submitted pre-existing records showing ~17% profit on turnover across 24,000 tips. Under independent verification on 90,000+ tips: ~0.4-0.5% profit — almost complete regression. They submitted because they were winning (survivorship bias), not because they were skilled. Any unverified track record should be discounted by ~95%.