Cho'gath's Ultimate

I remember the days when Cho'gath was a tank and his ultimate was his only real form of burst damage. During that period, Cho was the epitome of balance as you could see him on any given day and no one batted an eye.

All of the sudden we have the emergence of AP Cho'gath who is nuking people for upwards of 1200+ TRUE DAMAGE. And this AFTER he has already hit you with 1k plus+ magic damage that is tied in with an AoE knock-up and 2.5 second silence. Before people say "just dodge the knock-up, any Cho worth his salt will use his silence first (which has an absurd range).

The problem I have is that Cho's kit is already hard to deal with when he builds AP due to the amount of crowd control he brings, but then to have an ultimate which can take out 50-75% of a carries health alone and is unable to be mitigated just seems absurd. Tied in with ignite, late game Cho is dealing out upwards of 2000 true damage with one ability and a summoner spell.

This doesn't even touch on the fact that he has a ridiculously safe laning phase because of his innate sustain and tankiness.

All of the sudden we have a champion who is tanky without needing to build tanky, has INSANE burst damage (most of which is TRUE DAMAGE) and has a ton of CC dropped on top of it to boot.

How is this balanced? I've spammed him in solo queue and you become monster without even snowballing. Farm half decently and get an early Rod and you're set to go for the entire game by one shotting carries, nuking TANKS and silencing an entire team for 2.5 seconds (which in a teamfight is an ETERNITY).

This needs to be dealt with.