But not as good as a Mac at any of those tasks?

Could you elaborate? In what way?

Well I can use the exact same apps on the Mac to do all of those things, so there is functional parity. But you get the advantage of a more precise pointing device, keyboard, and an OS that lets me easily have multiple things open at once. Video is certainly better to watch on a Mac, since it's got the correctly shaped screen and doesn't fall over when you set it down.

What is so hard to understand about the fact that this is for you and not necessarily for everyone?

That's not hard to understand. I just think it's probably true for most people, not necessarily true for everyone.

Plus, I'm interested if the person I'm replying to actually thinks it's _better_ than a Mac or just "also good".

For me iPad is better at these tasks i.e. at tasks about consuming content.

I guess mostly because of its form factor (I can sit on a couch, no need to keep anything on my lap, I can adjust viewing positions easily) and the touchscreen input (to me it’s more immediate than working with the pointer).

It’s subtle; obviously you can sit with a laptop on a couch too, and touchpad can be intuitive as well. Still, for me it adds up to iPad’s UX being more approachable, more hands on, and more natural.