We can talk about differences as well as similarities.
For example, like humans, apes have well formed rational faculties. Their ability to develop an argument, follow a line of logic, draw conclusions and frame hypotheses is quite remarkable.
Also like humans, apes have a marked faculty for language. (This, of course, is intertwined with their powers of reason.) Their vocabulary is enormous, their grammar complex, and their conversations deep and meaningful.
The point of this discussion is to find main quality that separates humans from animals. Not to sweep it under the rug.