There are thousands of different jungle niches. You seem to be confusing jungle niche with jungle habitat. Take a look at the typical diet of a mountain gorilla (this is part of its niche, food, in case you didn't know), an ape that lives on the ground just as hominids. This is no where close to what our diet can consist of. We can't digest leaves and stems which is about 85% of their diet and they have to eat a lot of it. Further, there isn't much other food available in these locations.
The whole point I was trying to make is that hominids are not fit to live in niches that apes occupy and that's why we don't find them there. Modern human consumed every niche that a hominid can occupy and therefore all other hominids were wiped out and many apes were not. This is not complicated.
BTW, sorry if I strayed from my original point, I was having to defend against people nitpicking my original post.
Edited by Databed, : No reason given.