The adaptive SW/688I driver will stalk the target until it gets within range to use its weapons. With LW/Ami, you can close to within no-escape range of an Akula without being detected. So, it's really a matter of having the knowledge of how loud your sub is at various speeds, knowing the enemy's detection range for those sound levels for the present acoustic conditions, and having the TMA skill and patience to utilize that knowledge.
"If you know the enemy and know yourself, you need not fear the result of a hundred battles. If you know yourself but not the enemy, for every victory gained you will also suffer a defeat. If you know neither the enemy nor yourself, you will succumb in every battle." --Sun Tzu
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