X is a Repliroid. Just as Roll is a Repliroid.
For those not equipped with it (and shame on you), Zan is referring to Zero's victory quote when battling against Roll in Tatsunoko Vs. Capcom.
"human-like" is a fairly loose term, though, given that we're including animals which are to varying degrees anthropomorphized.
That and they feared the reploid's emotions would be too powerful and would "overthrow" the human race.
That and I think there are those people who simply don't see the value in an emotional creation, especially for combat Reploids which is what we usually see in a MegaMan game. There were plenty who looked down on X back in the day, after all.
So I gather this thread is about "catching up to X" in the emotional sense rather than the power sense (to which one would simply answer that X is constantly growing and that technology HAS caught up to him a couple of times, it just fails to do so on a regular basis). Thing is, as with every "difference between Reploids and humans" topic, it's not a matter of if, it's a matter of when. The fact is that Reploids DO at some point become nigh indistinguishable from humans, ZX being well into that era if you overlook the forehead triangle.
Sometimes I wonder how much of it is capacity and how much of it is simply how they see themselves, though (kind of a nature-vs-nurture thing).
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