

Do colour Vs color/ catalogue Vs catalog etc… sound different phonetically to you also?
To be fair, those different spellings denote different variants of the language, and these words are pronounced differently in British and American English. So yeah, perceiving those as if those sound different is a normal thing, I guess
Edit: ironically, miaow and meow make an identical sound, according to Cambridge Dictionary: ˌmiːˈaʊ
I find your point of disregarding American vs British pronunciation whilst regarding American vs British spelling a bit strange