projectors and 1080p

[llmercll]

according to all the charts Ive seen i understand that if you are sitting say 9-10 feet away from your tv(for a 50", less for smaller, more for larger) you wont really tell a difference between 1080p and 720p.

My questions now is on projectors. they usually show screens of 100" to 120"...

since the screen is so huge, does the chart still apply?

http://comcal.wboc.com/img/resvsdist.jpg

it looks like you need to sit 16 feet to see full 1080p and 24 feet to see full 720p...does that mean that a 1080p resolution will have a much better effect on projectors than say lcd or plasma hdtv?

i always thought projectors were more fuzzy and less sharp than tv's, and wouldn't think it can tell the difference of 1080p or 720p...or if they are sharp then it would make a huge difference?