User blog comment:BIA-Kaboose/The Problem Behind Balance/@comment-24212970-20131211103144/@comment-8267817-20131212140650

Well Darkenmorph, Rumble's slow is quite severeif he can manage to land both of them, His Electro Harpoon stacks additively, not mutiplicatively. If you land both that is a 70% slow, not to mention his ultimates slow, with both of those the enemy is crawling away or dying.