The MAIN differences lie in the box art and layout- there are NO copyright or the little 'R' symbol anywhere. I've compared the unopened toy with pics from Seibertron and TF Kenkon and don't seem to detect any difference other than the badly applied paint on the bonnet.
I emailed the seller and he/she has this to say:
'Thanks for your email, yes, the packaging is different from the auction
listing, because we used the pictures from the Hasbro US web site, (To be
honest, I didn't know there is different till I found out later), anyway,
because Hasbro offer alternators in the US and Europe market, and the
packaging had different, the toy itself are the same as the were made in the
same period, part were sent to the US in US Packaging, and part sent to
Europe.
Please let me know if you want to exchange or anything, but we only have
these version (Which by the way, is very hard to find)'
It seems that BBTS also has a shipment of such Mirages, but that presumably does not rule out the possibility that they could be KO?
' PLEASE NOTE: This item may ship with multi-lingual international packaging. It looks basically the same as what is pictured, but there will be a bit more text in places due to the multi language translations.' http://www.bigbadtoystore.com/bbts/product.aspx?product=HAS11878&mode=retail
Is this a KO or the real thing? What do you guys think?
Any help would be greatly appreciated.
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Comparison pics below:



