I completely understand the perk. Ashes to asset helps replenish Super energy when you kill an enemy with a grenade. This means that for a grenade kill, you get 7% of your super energy back. Take a look at the Titan skill tree for Strikers. See the perk called Amplify? Does the same effect for 7% off of a melee instead. This combined with a few legendary armor pieces (melee kills reduce grenade cooldown. An armor perk found in all class armor possibilities) means you get to have the same rough equivalant and yours is the grenade. So no. I get the perk. You do not.