Android doesn't need antivirus. It's just shit being peddled by the AV companies and Apple as they've seen a new sector they can exploit. I've owned 2 Android devices for a couple years and SHOCK HORROR! Neither have had any problems with malware or any other nasties.
This looks like Apple attempting to spread more FUD about Android. It's tried the whole "fragmentation" thing, that Apple insisted was a problem, but they were the only ones complaining about it, and now they're trying security. Although the only problems seem to be proof of concept or some dodgey "free" version of a game with 2 downloads.
Like a lot of things in life, your stupidity will determine your mileage. If you need someone to hold your hand (and money) Apple is there for you..
Icon for the people above, and myself.