How is the Avatar 2 trailer so unique?

Avatar 1 movie was released on 18 December 2009.

But till date no other film like this has been made.

The VFX of the film surprised people at that time.

But Avatar is now ready to release with another part of it (Avatar 2).

In whose trailer so many good VFX have been used.

Avatar 2 movie is the story ahead of its first part.

Its official trailer has been released. Which is good enough.