Indeed. As we know there were a total of 750k players in the weekend beta, we can assume that at the end of the staggered invites on saturday, a total of around a million (or 2 million, I can't remember the exact number Bioware said about the total of invites sent out), had the opportunity to log in and play.
As we found out later, there were 750k players in that beta, so we can safely deduce that over the course of 2 days, there was less players in game over the course of 2 days than there are people who pre-ordered for early access.