This is a false equivalence; the answer is “neither”.

Veganism doesn’t seek to end all animal suffering, but not to exploit animals for humans’ sake. We don’t need animal products to survive, so we shouldn’t add to whatever misery already exists naturally.

In the case of livestock, we should just stop breeding them. No vegan is arguing for dumping all cattle in the savannah to be hunted by lions.

This guy would own slaves

This is pure bullshit. Pigs, cows, chickens all if left to their devices form societies, display complex emotions, and have just as unique of personalities as humans do.

Humans don't even permit most of those animals to live past "teenage" years. Its not decent treatment, I recommend the documentary Pignorant if you want to see first hand what a gas chamber is like.