Talk:Atlas/@comment-27530357-20180210172300/@comment-205.175.97.216-20180211022843

That sounds like a bug or overlooked interaction to me. You can get rubble from Atlas' 4 as well since it instantly petrifies all enemies around you, so the interaction isn't solely with his 3. Also the augment very clearly states that all enemies caught in the AoE are petrified, so it should work.