It's likely true that they were less war-like, at least from a struggle-for-existence point of view. Clearly, not successful there. That's why Europe's neanderthal populations contracted and went extinct locally, outside obvious refugia. Whatever happened to these 'special folk' after cowering in valleys, fiddling with first cousins for 1000 years? As a geneticist, I can make you wonder. I can make your toes curl. As an 'inferior imigrant' I can open your eyes and scare the Jesus out of you. These
things are worse than barbarians. And I hate to be the one to inform you, but your distant ancestors from Derbyshire are significantly less related to you, genetically, than a random bus driver from down the road, regardless of his or her ethnicity. A little bit funny, me thinks.
So you claim Neanderthals didn't make it to what's Scandinavia today? That interesting, mainly because it makes no sense, whatsoever, in any associated field of study.
I'll leave you with
this to contemplate, because the difference, the oddness, needs to be explained. Blaming foreigners doesn"t cut it, frankly.