Mid Kogmaw vs Adc Kogmaw

ADC shreds them faster, no question

the problem is, it's hard to get fed enough for either build

ADC also meshes with his kit better because of the long cooldowns and innate attack speed and attack range

the problem is that his ADC form has a lot less poke, but build it sustain and watch their hp bars disappear

Probably a mid mixed-damage build, but you would have an atrocious lane-phase and probably come up behind.

ADC Kogmaw only needs , his AA steroid and some armor/magic penetration to deal with tanks by the time endgame rolls by. Beyond that, it's obviously best to invest in items like or other standard AD-carry choices for dealing with squishier opponents.

ADC Kog will shred tanks faster because of his W stacking with BotRK.

AP Kog is really use for the massive poke damage that ensues from Luden's echo. But unless you can get Blue buff from your Jungler, it's not going to work. He's that mana Hungry.