victory depends on luck; winning and losing are both down to fortune
Proverb meaning that in any contest, the outcome is ultimately determined by luck or fate, not just skill.
Since winning and losing are both down to luck, don't worry too much about the result.
A set phrase combining 勝負 (contest) and 時の運 (luck of the moment). The exact origin is uncertain, but it reflects a common Japanese view that chance plays a major role in outcomes.