MINECRAFT MAP! I can't believe my friend! Can I somehow bust him?

I have a little question

a friend of mine has just told me that he started this lobby the day before yesterday with 30 people and finished yesterday (SEE PICTURE).

My question, I can busten him somehow or find out if this map is not downloaded yet, because he indicates that he has built them in one day. And I think that is so implausible in such a lobby.

Thank you

LG: Nils

How so? With World Edit is something quite relaxed.

And it does not matter if that's true or not.

That's a matter of 3-4 hours for 3 people who can handle WorldEdit.

A few skyscrapers and a roundabout is really no art.