In a single round of combat, a wizard can use a spell to rain fire and bring a max health fighter down to 1 hp.
In comparison, in a single round of combat, a fighter can swing their sword four times and bring a max health wizard down to 1 hp.
So they're both as good as each other in a hypothetical 1v1 combat scenario which is unlikely to ever come up during an actual game. Bravo. Can we stop having this argument? It's been 4 months since this exact meme was posted.
I think you forgot about the bear barb who takes half damage from everything but psychic. Good luck getting them down to 1 hp in 1 round unless you go first.