I have been asked several times in the past for a comparison between my two audio interfaces, after I had done some basic review on each of them.
I check noise floor levels, input responses and use my RODE NT1 microphone during my tests, and few extra bits.
The audio process and sound colouration is not part of the test, as I believe this can be subjective.
The results will surprise you. You need to watch it to find out.