Kog'Maw Q MR/Armor Shred

Kog'Maw's Q starts at a 40 mana cost on a 8 second cooldown and provides passive 15 / 20 / 25 / 30 / 35% attack speed, Magic Dmg 80 / 130 / 180 / 230 / 280 (+ 50% AP) and RESISTANCES REDUCTION: 20 / 22 / 24 / 26 / 28% of 4 seconds

Since Riot doesn't want Kog'Maw to be AP, we can completely remove the fact that we will be using this ability to poke champions with. Instead, we use the utility aspect in the sense that their defenses are lowered for 4 seconds. Assuming the standard enemy ADC Lucian has 34 armor at level 6 and you've invested in Q 3 times, the %armor red is about 8.16 armor for 4 seconds. Using the armor/dmg reduction ratio (100/100+armor) = dmg reduction, Kog'Maws basic attacks WITH NO ITEMS will do 61.84 physical damage x4 autos (assuming he is at 1.00 AS) which equates to 247 physical damage. THIS IS ASSUMING THAT EVERYTHING IS IN YOUR FAVOR When trading with Jinx, if you land a Q and 4 autos you out trade her by about 43 p. dmg (assuming she hasn't used any of her abilities). On top of that, the projectile speed is so garbage that http://leagueoflegends.wikia.com/wiki/Kog'Maw doesn't even have it.

Edit: My point is that the ability is worthless along with his other abilities besides W