Why Carnage out trashes all other trash.
First, let's take a look at the other trash tier champs:
Kamala Kahn - The living meme. Yes, she is widely considered the bottom of the barrel, but I'm not so sure. She has a few things going for her. Poison immunity... infinite stacks of fury. Admittedly, it's not much... but it's something.
Spider-Gwen - Yes, she's bad, but she's not the worst. Her evasion, heavy and crit chance can be used effectively.
Luke Cage - He will permanently be moving away from the trash can tomorrow with his new buff.
She-Hulk - poison immunity and semi reliable stuns
Iron Patriot - armor up, stun, armor break, heal
Hulkbuster - armor up, armor break, large health pool
Colossus - armor up, bleed immune, damage increase
Joe Fixit - reliable bleed and stun, poison immune, chance for heal
And now Carnage... what does he have going for him? Really cool animations.
Why is he the worst?
1) small health pool
2) low armor
3) can be bled and poisoned
4) bleeds are weak and short
5) mutation mechanic is awful
(A) it requires a special to activate it
(B) defensive mutations require you to take damage
(C) it takes too long to actually get max mutations
(D) max mutations do little to put him on par damage-wise with other champs that require no effort
6) his synergies are pretty bad
7) he was a huge let down because of the hype that was put into him by the community
Carnage is just all around bad. Bad, bad, bad.
All the other trash has some redeeming qualities. Carnage has none.