Please excuse my ignorance but could someone please explain to me the difference between a natural Japanese finishing stone vs a natural Chinese finishing stone.

I am new to honing and I have recently bought a Chinese stone for a good price. It may be slow but seems to do a good job. When I read online regarding Chinese stones people seem to refer to them as cheap and refer to Japanese stones as exotic (costing higher prices). Is it true that Japanese natural stones are superior or is it more about marketing?