But I do think that that is precisely the point. In naming him Kal-El, she creates in her mind the Superman, not Clark Kent. In that sense, the name is the sign of how she sees him. It's not really how Clark would see himself, but how Wonder Woman perceives things.

The argument is also more powerful if the Wonder Woman/Batman/Superman Trinity series is considered a canon story...am not sure about that now. But the dynamic I saw there lends a certain creedence to the thought of the name being the sign.