Read more carefully. The second article, at least, is saying that clock-for-clock the ARM is faster, but that they haven't managed to get the clock speeds near Atom clock speeds, and hence the Atoms still have higher processing capabilities per unit time.
I just googled for comparisons and posted links here.
Faster than an ARM dev board. And only slow if you use Windows on it instead of installing a nice happy Linux distro.
Meh, if there was only a good benchmark of PandaBoard's CPU and an Atom dual core. I could make an easier decision...
Peak or burst, sure, but I seriously doubt it can pipe out 700KBps sustained.
Actually, it is around that area. 600-800 KB/s is what I see.