So wait, Cho'gath can do more damage than Nunu to a monster?

ACTIVE: Nunu commands his yeti, Willump, to take a bite out of target enemy minion or neutral monster, healing himself and dealing true damage.

TRUE DAMAGE: 400 / 550 / 700 / 850 / 1000

ACTIVE: Cho'Gath devours target enemy, dealing true damage (1000 (+ 70% AP) true damage against minions and monsters).

So by level 6, Cho'gath has what Nunu has at level 9, and more even then as long as he has at least 1 AP. It has an 80 second cooldown if it doesn't kill the target, a 40 if it does, where Nunu's is 9 seconds at rank 5.

Nunu can gain temporary increased health, magic damage on hit, and something else I don't remember. Cho'gath can gain permanent health until he dies, in which he still retains some if he has more than 2 stacks.

So, Nunu has a 9 second cooldown 1000 true damage to monsters Q. Cho'gath has an 80 second cooldown(reduced to 40 if target is monster and killed)1000+ true damage ult in which grants him permanent health. Nunu's cost 60 mana. Cho'gath's cost 100 mana, and refunds 50 if target is a monster and killed.

So basically Cho'gath has a Nunu Q on a 80-40 second cooldown that can also be used on players as well, though only deals 300-650.

So, what the heck? Cho'gath has an AOE knockup and slow, an AOE silence, a basic attack buff, and a ult that can deal true damage to champions that can quite possibly deal more damage than Darius's ult(depending on how many passive stacks he has) and deals more damage than rank 5 Nunu Q as well as level 18 smite, and constant sustain through killing minions or monsters.

Nunu has a 1000 true damage TO ONLY MONSTERS Q on a lot shorter cooldown, with a MS and AS slow, a movement speed and AS buff, and an AOE MS and AS debuff plus damage.

So what does anyone else think? I personally think the monster effect of Cho'gaths ult should be nerfed. Maybe just as much damage as he does to champions? I think that's fair.