What do you mean by that? That we are a different species than Homo sapiens?
This whole thing started when Steve H claimed that Jesus being "fully human" meant not that he was human in the sense that we are all human fallible creatures but that he achieved some sort of Platonic ideal humanness that we fall short of (the "Platonic ideal" words are mine, not Steve's). He claims that that is what "fully human" means in the statement "Christ is fully God and fully human".
His interpretation is problematic in two ways. The first is that it means that we humans are not human, which is absurd given that "human" is a word that is defined to reference our species and also, apparently, offensive to some posters here. This is what we have been discussing up till now.
The interpretation is also problematic in that, in the context of the statement, it doesn't make sense. If you want to use that interpretation of "fully" for humans, you need to use the same interpretation for gods too, which implies there are other gods that are less than perfect.