In some ways, yes. In the deck I ran at Days of Ice and Fire, Looters would have been the perfect discard engine for me. In fact, Looters are arguably a better discard engine than they are a draw engine. Of course, if you do want to draw, the Looters always make you discard, while Val does not. Looters also require extra cards to make them usable more than once a turn. And are limited to a single color. They are similar, but the ability for Val to see play in any deck without a guaranteed discard, and that she is repeatable 3 times a turn without cost and can still swing at the opponent? Yeah.... she's better than the Looters overall. If I have time to kill over the weekend, I might browse around the Gatherer and see if I can find something a little more comparable.
On an only slightly related note, Nate/Damon, would you guys print a direct Merfolk Looters analogue for me? Pretty please?