The simulation/rendering rule is only for "Hardware and Product Design Projects", not software.
which came from Kickstarter's community manager.
It seems fairly clear to me that they are just trying to prevent these kind of shenanigans: http://blogs.reuters.com/felix-salmon/files/2012/09/bulbs.jp...
http://blogs.reuters.com/felix-salmon/2012/09/18/kickstarter...