You're assuming that every device that supports otg audio works with each USB DAC, which isn't correct. It's been stated many times that some android phones work with certain DACs without issues while others don't. There's even weird stuff like the Note 2 and SGS3 reported by many not working with certain DAC but for instance the US version of S3 working with it (like Pico). It's just that android devices are very different from each other - custom drivers from the manufacturer, different implementation etc. That's why Hifimediy probably even bothered making a different version and stating that it should work with more devices.
If Hifiemdiy would know of any devices that the Tiny would work over the original, they would list them.
They just assume it may work with more devices due to lower power consumption.
I wonder how many times people thought the DAC wasn't working simply because they didn't press the "Volume Up" button.