Thanks for the clarification, I'd just finished doing some more research and was about to edit my post
Got this from a comment on the million mile secrets blog: "VS to Hilton is 1:1 not 1:2. I confirmed this with Hilton by e-mail a few months ago. It seems that not only did they not thank me for pointing out an error on their website – they also did not correct the error. Ridiculous." Way to confuse people Hilton. Good thing I didn't transfer a bunch of SPG points to Virgin to Hilton without checking.