Who is Yas?
Both are great cookers, but very different.
No, a Jambo is not tuned for even temps. Jambo cooks use that as part of their cooking methods, putting meats that need higher heat closer to the fire box, etc.
As far as rubs, do as Hooked suggests and search using the Google search near the bottom of the page. It searches just this site. If you are looking for a specific type of rub, some folks may post here, but looking for good recipes is pretty general and is better done with the search.