Couple things:
The MP10 KO is not better than the original, they claimed that they were going to make improvements over the original release, but they have in fact delivered a product that's inferior to the original, the hands are worse, the chest (the thing they said they would make soo much better than the original) is even worse off than the official, build quality is also not as good as the Hasbro, close but not as good.
Both, the item picture and the extra pictures he sent you are of the KO, just the extra pics show him next to a Takara style box, which doesn't look large enough to actually have the trailer it looks like Nemesis Prime's box done up as Optimus Prime.
Megatron uses a picture from this very site:

Neither state that they are MISB, MISB stands for Mint Sealed In Box, as in never opened. Neither state that they are that, in fact both state that they are new in box, which can mean anything from being opened once and then put back, to having been used and then put into the box. But New in Box is also very often used by people who sell KOs on ebay, it's a code word so they can mark them as KOs, so people who want a KO know what they're getting, without having the item removed and fined by ebay, since ebay made them illegal a while back.
Then there is the fact that your screen shots show me you live in Auastralia, so good luck with that MP Megatron, should it actually be a real MP Megatron (the price does look like it could be an authentic used one, it might be something completely different, like a KO of the G1 figure), customs might actually confiscate it and won't let you have it, and if they do you must join an official club and have it locked up in a safety cabinet.