That's not what I'm seeing... they are just trying to make it as hard as possible for you to make a reservation for anything but the Daily Rate :-).
This was achieved by first selecting a corporate rate, searching, selecting a promotional rate, searching and then selecting the AAA rate and searching again.
Resulting in one screen with those 3 rates.
But really... it should have been built so you could achieve that in one search.
And all that annoyance for just showing a "pretty" but dumb reservation screen. But at least they advertise prominently that these are the BEST RATES guaranteed, which we also know to be a lie.