Surrender is generally better in scenarios where the player has a low probability of winning against a strong dealer upcard, such as an ace or a 10, while holding a weak hand like 15 or 16. By choosing to surrender, the player forfeits half their bet, minimizing losses in situations where playing on would likely result in a bust or a loss. This strategy can be particularly beneficial in the long run, as it helps to reduce expected losses on hands with poor winning odds, allowing for more efficient bankroll management and improved overall gameplay.