Always keep in mind awesomeness is a subjective thing that cannot be measured, sales figures however can be measured.
To that end maybe a 3D toilet can appear up front and not necessarily strike as awesome to most.
If we are talking about showcasing in top 3D models on the landing page then I believe the time of publishing and rate of interactions it gets in shortest amount of time are most dominant factors for appearing there for a while.
I have been there few times but again have to warn to not overate the impact it has on sales.However you do get more likes in that time so if that is something you value?
You can try it yourself, publish a model and try to immediately get lots of views, it will appear in the top 3D models after one or two days.
You need to publish and directly post updates(add links) in all your social channels, artstation, pinterest, facebook groups, google+,etc., just get lots of views in short time and you will get on that page.
That is also reason you see mostly the same people appear there because they are usually very active online and get lots of views immediately after publishing something new.