It's been a couple of years since I did the verification so I can't remember but it is very subtle as the KO is supposed to be of very high quality and a close match. I can't be sure but I think the differences were more to do with screw types and subtle weapons detailing.
From what I recal there were two variations of a legit Hasbro/Takara released Reflector:
- With modified weapons that do not have any gaps like the one here
- With weapons that are identical to the original Microman release like this one
The legit Reflector variations only have their differences in their weapons, I think that the Japanese release of Reflector (for Transformers not Microman) was the one with the unmodified Diaclone weapons variant from what I remember.
The Microx (and KO) has the obvious difference of having a Microman sticker on Viewfinder while the real one says 'Reflector' on it but since its just a sticker it doesn't really count as proper verification.
I wish Geocities had not gone down or we would still be able to directly reference that variations page for more accurate information
As I mentioned, I have one of the two variations of the Transformers G1 released Reflector but I do not have the legit Microx release. However the version that i have is closer to the Microx release due to the weapons not being bloated but that's it.