What coins do you refer to here as being technologically superior to Bitcoin? I know that there are lots of coins out there with features like smart contracts, POS, smart property etc., and some of them may succeed. The main difference between them and DRK, is that DRK has just focused on improving one feature people already like about Bitcoin, anonymity, and it works right now.
Peercoin was the first major 'revision'. It had an an economic model which was thought through and much more focused on a particular role - i.e. being financial 'backbone'. This was reinforced by its high transaction fees and hybrid algo.
Then there were improvements in the algos themselves - Asic resistence, multi algo, service layers, efficiency and retargeting revisions, gravity wells etc.
What I'm saying is that having the most advanced technology isn't what gets a coin its valuation. Being seen as an 'original' certainly would appear to contribute and that's probably where DRK is strong.