There is a world somewhere between reality and fiction. Although ignored by many, it is very real and so are those living in it. This forum is about the natural world. Here, wild animals will be heard and respected. The forum offers a glimpse into an unknown world as well as a room with a view on the present and the future. Anyone able to speak on behalf of those living in the emerald forest and the deep blue sea is invited to join.
Both of you are correct in your assumptions. Some lions have managed to successfully adapt to the Congo rainforests (aren't jungles and rainforests the same?).
Like Pckts said, lions can certainly adapt to rainforested environments, yet not in huge numbers.
Like Brotherbear said, lions are ultimately adapted for completely open environments while those of the tigers are more closed and confined.