The Allwinner A10 is a SoC that uses an ARM Cortex A8 as the CPU, a Mali 400 GPU, Ethernet, SATA, etc. Yes it's confusing. It's like calling a hypothetical Intel Core based SoC the Foobar Core 10.
Apple called their ARM SoC the A4 and then Allwinner probably designated their SoC the A10 to play off that marketing.
Apple called their ARM SoC the A4 and then Allwinner probably designated their SoC the A10 to play off that marketing.