I'm not sure how I knew, but I definitely knew that what I was getting could only output to Vue before I purchased it.

I just went back to the e-on site to looked at the description for "REALVIZ - MatchMover Pro 4 HD" and I have to agree with you, it does look like you are getting the full product. It even has the $1800 crossed out and Sale $149 highlighted in red. This is very deceptive and e-on should definitely make it clear that what you are buying is "MatchMover HD for Vue" and not the full product.

IMHO, it's still a great deal.

~jr