In the end, if DRK does well, it brings attention to the privacy niche. People who look into the privacy niche more will eventually find out about XMR.
Maybe, but there are many examples where the superior technology simply lost. The current reality is that DRK has over 7x the capitalization and 20x the volume. So unless the message of the superior XMR privacy technology gets out it could be to late. The reality is that XMR has many advantages over DRK including:
1) No regulatory risk over the centralized masternodes.
2) No 1 MB blocksize limit. DRK to my knowledge has not addressed the issue of the 1 MB blocksize limit that is currently plaguing XBT.
3) No Proof of Stake attack vector. Many think of DRK as a Proof of Work coin. This is true as far as transactions but not privacy. Privacy is secured by what amounts to a form of Proof of Stake. There is a reason for the 1000 DRK capital requirements for masternodes. So yes the "Second Pirate Savings and Trust" attack on proof of stake I describe in this post
https://bitcointalksearch.org/topic/m.10182752 is actually possible against DRK. Where the attacker uses borrowed stake to create a large number of malicious masternodes.
For 1 and 3 above XMR wins because of the use of ring signatures and a single user level set of nodes
For 2 XMR again wins because of adaptive limits.
The technical superiority of XMR is clear; however the market on the other hand is currently sending a different message. One interesting aspect here is that DRK requires a significant percentage of DRK to be tied up in the masternodes, These coins are not available to the market. This of course is not the case with XMR.