I read somewhere that Homo sapiens were better at adapting than Neanderthals. For example, whilst Neanderthals used tools they didn't improve or on them. A spearhead from early neandethal development is the same as from a later period, yet in Homo sapiens there is an improvement in technology. Almost as if Neanderthals were less developed when it came to the abstract.
Think on it, in 300 000 years Neanderthals never advanced beyond hunter gatherer. No towns, cities, writing. Yet the later Homo Sapiens have been around for less than 100 000 years and look at us now.
Mmmmm... maybe they were better