Consider two hypothetical bets at decimal odds of 2.00, one winner and one loser. With 1 unit on each, profit is zero on 2 units staked. Put 3 units on the loser and 1 on the winner instead: profit becomes minus 2 units on 4 staked, a return of minus 50%. Reverse those stakes and profit is plus 2 units, or plus 50%. The result count stays one win from two. That is why a hit-rate headline cannot tell me the return on money risked. I need each stake, its recorded price and its settlement, then divide total net profit by total stake. This example illustrates accounting only. It does not establish an edge, and its prices are not available quotes for the attached match.