Look at it like this: Let's say the price (in dollars) of a real estate property we have invested in doubles in one year. So we should be doing pretty good if we flip it, right? Well, not if we invested bitcoin, the price of which (again, in dollars) quadrupled in a year. if we flip this house, we'll actually lose money.
This is the most confused statement I've read today.
If your house is denominated in BTC, and it doubles in price, and BTC quadruples in a year, then clearly investing in the house has 8x the original price of the house.
The problem is that bitcoin securities have halved, where bitcoin has 5x in the last couple months or so...since the btct.co shutdown