This is a very strange thing to say. Neanderthals did survive in exactly the same way as the archaic West African population that contributed the highly divergent Y-chromosome. They interbred with our ancestors (which is perhaps the wrong way to put it - since they are also our ancestors - our majority ancestors?).I pray on my knees for a Neanderthal having survived by the same way ,
there was interbreeding , but so far it seems that the Neanderthal are gone
Neanderthal genes survive in populations today, just as the archaic West African genes do - I'm unsure what difference you're seeing. If there is a difference; it's that Neanderthals have contributed a hell of a lot more to the modern gene pool. Almost all of us carry DNA inherited from Neanderthals.
We know this is very unlikely for one simple reason. When we look at the Neanderthal genes we have inherited; we see a lot related to immune system functioning. This makes sense - the expanding African population moving into Europe and Asia may have had some advantages over the Neanderthals they encountered; but the Neanderthals had already had tens of thousands of years to adapt to local pathogens. The immune system was unlikely to have be a problem for Neanderthals - it was probably one of their biggest advantages.I would say that our immune system was better than theirs. While we may have killed some off, it is more likely that we could adapt to viruses and bacteria that they could not, which made us carriers of their extinction.