Think about it why would they send an in-demand new release to a customer with a turnaround rate of a 3-4 days when they could have sent it to 2 customers with a viewing turnaround of 1 day hence satisfying more customers. Get those movies back fast and netflix will reward you with new releases aplenty.
You might want to research the whole lawsuit against Netflix which was settled last year or so. Netflix openly admited to sending new releases out to those people who don't rent as much over their heavy users, as in the long run they make way more money off them....then the people like you and me. Think about the big picture....while the new release might be sent to both of us within 5 days...over that same time we've taken out twice as many movies as the person who keeps 1 title for 5 days.
The average (and best customers money wise) are those who pay the exact same as us, but only use 1/2 the services per month.
This is not a fairy tale, it all came out in court, and Netflix settled by giving all customers who were on board at the time a free month with extra movies.