Talk:Vayne/@comment-8969250-20151008173331/@comment-24496127-20151013154637

Oi, I meant his damage to tanks falls off, not Kog'maw himself. If you want to compare their pure tank killing ability, vayne wins hands down, especially if you consider that she's much harder to catch and builds to shred them. If you want to compare their actual late game effectiveness then that's completely different and highly variable.

Assuming the target has 100 MR, which is far from an unbelievable amount, magic damage should be reduced by 50%. That means that a Kog'Maw adc, who has no magic pen, will only do 3% of that persons max hp with his w. Even if he hits his Q they won't take too much extra damage, and his W isn't always active. Compare it to Vayne, who gets her damage, plus a base amount, basically no matter what, and  it's easy to see which is better at just outright killing tanks.

They each have their advantages, but whe it comes to just tank killing (Assuming they both get to just focus a tank down), Vayne is by far better. She builds to do it better, and she has a kit that does it better. A Kog is only her equal  or better than her at it if they have no magic resistance or he goes AP.