This Allwinner A13 SoC can be found mostly in cheap chinese tablets, for a simple reason: It’s cheap. There’s a reason for their cheapness: They perform terribly. Even browsing simple web sites it quite laggy with these devices.
However I’ve found one advantage: They are virtually invincible from the software side. No matter how much you mess up a firmware update, they are recoverable! Which is quite nice while learning the ins and outs of Android devices and experimenting with different firmwares. Even making your own!