I don't get the 'Android can't multitask' thing either.

Typically I've got a couple of ConnectBot ssh terminal sessions open to my server, a browser or two, twitter and sometimes even a VNC session multi-tasking just fine on my Nexus 7. Usually they only stop running if Android runs out of RAM.

On an iPad some apps multitask fine also within limits. For instance Panic's Prompt SSH terminal app keeps sessions open AND running for 10 minutes before the OS shuts the app down.

IME Android is better than iOS but none are as deterministic as a proper multitasking OS like Sailfish.