I even looked at the spectrograms (that basically shows all the frequencies of the audio) at that moment and they're identical minus any artifacting from the moderately low-quality mp3 version that soundcloud streams to you. Either it's a problem on your end or what you're hearing comes from the mp3 artifacts.
If your theory is correct, it should sound exactly the same as 48000, and 44100 if you combine the two.
There is definitely a difference between the two wave forms
48000/44100Also, here is two 44100 tracks combined
44100/44100It is like when two instruments are out of tune, they oscillate and create distortion, since the 44100 is not identical in frequency to 48000 is sounds distorted.