Did you even read what you posted?
"Although OS X supports a backing store, iOS does not. In iPhone applications, read-only data that is already on the disk (such as code pages) is simply removed from memory and reloaded from disk as needed. Writable data is never removed from memory by the operating system. Instead, if the amount of free memory drops below a certain threshold, the system asks the running applications to free up memory voluntarily to make room for new data. Applications that fail to free up enough memory are terminated."
iOS does not have the ability to swap out unused pages. Or rather, it's not CONFIGURED to. I've seen jailbreak tweaks that will enable a swap partition, but I honestly can't see this providing more performance than Apple's own optimized memory management.
Remember, the flash disk in the iPhone is SLOW. It's not like the speed demon SSD in your Mac.