Inb4 Fizz "Chum the Waters" actually boosts its own damage and Riot is completely incompetent
Just had a Fizz with a LB/Cap/Zhonya's/Blasting do 1004 damage with Chum the waters, on 82 MR, with no void staff, not even pen boots.
Seeing how his ultimate does 450+1:1, I don't see any realistic scenario where it reaches 1000 dmg on 44% mitigation from MR. (36-38% give or take after the little pen from runes and masteries)
I still think he is weak(and we did indeed win), but seriously Rito, if you design something, at least make sure it gets in game and prove me for once you can actually program.
You should have gotten a pic of his actual AP, would have made this easier to verify...