Went that far...can you open it up and look at the piece?
Personally if the piece itself looks good and like other images you have seen and the base is labeled proper, it should be fine I would think.
Also, I would assume a fake wouldnt come with instructions.
I was going to say I havent seen / known much about Blizzard fakes, but then I have seen a lot on overwatch pieces. So dunno.
Do fakes go as far as to mimic the shippers? The foam inserts?
Different runs could have run into needing different types of boxes? Print looks all similar.
One more thing, unless it is not common among all pieces / shippers, thought I read that you are looking at the CTN, not the ES of the statue. I guess CTN is crate or carton or shipment number. The amount of pieces in the container, shipment, etc. So the blizzard box is from the first initial push where lots came in. Maybe the recent shipment they figured they didnt need as much. I dunno.