Are they sure? The Denisovans were big fellas and gals going by their finger and teeth fossils. Could be a giantess who needed to keep her hair out of her eyes during Snu Snu.
Even our closest cousins, Cro-Magnons, were big fellas with bigger brains than those of us moderns. We've devolved around 200cc of brain mass, and there's little evidence that our brains merely became more efficient during the downsizing.
Are they sure? The Denisovans were big fellas and gals going by their finger and teeth fossils.
Part of one finger bone was the initial find, since then three teeth, the last one being a child's milk tooth. The genome is all we've got, there's not enough for morphologists to work out, other than they were somewhat similar in size to us.