Pixie; I haven't personally checked out the difference between male and female urine smells. My unscientific experience in life (lived experience) tells me that women are smellier than men, but I don't mind that at all - I like the way women smell; much preferable to the smell of men. I can tell one bike from another by a single saddle-sniff without examining the frame layout or size.
Because you are a straight male, atheist, so you may prefer the pheromones... but that is subjective- and male urine has a stronger smell. It does in all mammals.
I don't think it's subjective to recognise that tom cat pee is way stronger in smell than a female cat's urine. It's unmistakable and knock-out strong.
How far it reaches, is the only scientific test I am actually aware of- and always happy with further education! But the aroma of male urine is detectable at least twice as far as female.... I'm afraid I haven't got any links- but I can try a Google if required.