I tried it and found it very unprofessional. The version I've just installed from Play Market even does not prevent the system from go to sleep during the tests! So, it shows inconsistent results, depending on my "display off timeout" settings, on my activity (e.g. a touch when I see the display goes dim) etc. I've got two results with 2x difference in a row, and I've got its crashes in a very stable conditions (it seems the programmer is not experienced in thread synchronization).
So, I continue using AnTuTu, along with its Stress tests, as I found nothing bad regarding it. It produces very consistent results, and it fails only if I run the hardware really beyond the specification.
OK, back to the devices
I've configured my DX220 performance the same way as I've done for DX150 (in 1.17 add-on), and resulted with slightly less marks. Why? Because I use quite aggressive "software cooler" to prevent the SoC from overheating, and DX220 produces more heat than DX150, even having identical basic platform. If I turn the "software cooler" off, the result is much better, but I don't want to release such a firmware. Though, most probably, the add-on for DX220 will run it a bit faster than the stock firmware (still slower than DX150), because so far it has passed
my stress tests.
The bottom line is: DX220 is designed to run hot, and, as such, slow (compared even to DX150), for the sake of the sound. So, buy it to enjoy music, and/or buy something else to enjoy benchmarks