Be sure to really think about your answer.

Well, Ariel in her "legs" but Mulan is a strong human being.

Mulan is trained.

For someone who's so thin, Ariel is quite strong. But for a young girl, Mulan is really strong.

Depends, really. Ariel would deffenetly be less strong in her human form in the original movie since she wasnt used to two legs. I am not sure about who would be stronger with her in her mermaid form though.

Well she was able to move away an underwater boulder blocking her grotto with relative ease in the original film which, in real life, an underwater object blocking an object with an unbalanced volume would result in the door being sealed shut and virtually impossible to open, which doesn't even take into account water pressure and other related factors. And in an alternate ending she was supposed to slam into Ursula damaging her for long enough to knock the trident away and Ursula weighed like 300 lbs.!

Everything is lighter in the water. I'm not saying that Ariel was weak, the rock must have still been heavy but I think Mulan was stronger.

Both are though

Under water, Ariel. Pre-training, Ariel. But after training, Mulan hands down.

Aww, no both choice? Anyways, she survived a effing AVALANCHE! If that's not strong, then I don't know what is...

pff by far