Nowhere does Sanderson say that angreal work differently to sa'angreal.

And even regarding the reservoir statement, he says he will have to check the notes to make sure he knows what he's talking about.

As for the Choedan Kal, he doesn't even know how many times it magnifies Rand's strength. He uses the example of 100, which is ridiculous, as we have a quote in CoT, that the entire White Tower, using every angreal and sa'angreal in their possession, couldn't channel even a fraction of what Nynaeve was channeling through the Choedan Kal. And the amount of saidar used by Nynaeve was called a foothill next to Dragonmount, compared to what Rand used through the male access key.

So basically, we are talking about the order of a million times magnification, not 100 times.

Sanderson doesn't really know the answer to this. He was making it up as he went along during that Storm Leader discussion.

He didn't even know definitively how far back Rand's balefire burned Rahvin's thread out of the Pattern. Some reader had to correct him, saying that it was probably closer to an hour, rather than 15 minutes.

And Sanderson didn't even realise that Rand was using his small man angreal at the time, which probably halves the calculation again.

My point is, Sanderson is not as clear on many of these things as you might think. And it does come through in the writing, from time to time.