Zac or Fiora easier for carrying?

Zac carries by setting up a teamfight to be slaughtered.

Fiora carries by slaughtering a teamfight that someone else set up.

I'd rather carry by getting my teammates fed than just myself, so Zac.

Fiora.

Zac can't knock a turret down in 3 minutes and isn't dependent on stupid teammates to watch you go in and do nothing about it.

FIORA

Tanks generally needs teammates to pull their own weight while you do the setting up Damage dealers like Fiora can capitalize by herself on enemy mistakes

Well it depends so far every game with zac where I had a yasuo I've won. And fiora her ult is negated by blind that's sad

Generally Fiora.

Zac is largely dependent on his team to do the damages. A snowballing Fiora does all the damages and kills everyone.

The flipside is that a Zac that is behind will be more useful to his team than a Fiora that is behind.

what's better at carrying, a tank or a carry? A carry?!? How'd you guess?!?

Zac is by no means a weak champ, but he can't carry if his team isn't doing well, where a Fiora can and often will solo carry a match of feeders as long as they are semi competent.

My first guess would be the melee ADC.

Zac builds tank, which can't even carry on a good day, but building him anything else is hella risky and likely to fail.