I’m not sure what the exact question is.
As mentioned before, the channels as well as the kernel size can be picked by the user and is one step of defining the model architecture. I would not claim that one approach is superior to another one, as model architectures change a lot and these kind of general claims might be bogus after a while.
If you are not sure which setup to use, I would recommend to start with a known architecture such as a ResNet and use it’s setup.