Comparing deceit & technological ineptitude (Dash) to interesting technology without a future (Cryptonote/RingCT)[1] means there is no distinction on the long-term future from a technology impact standpoint (presuming that characterization is accurate[1]).

Be careful with trusting the opinion of the BTC core devs, since they managed to allow Bitcoin to end up in a Tragedy of the Commons on block chain size and economics of mining. They are smart on technology, but apparently clueless about economics and marketing positioning.

Then again I am not appealing to authority, as you have no good reason to trust my acumen/opinion either.

[1] Start reading from this post forward: https://bitcointalk.org/index.php?topic=1219023.msg13636077#msg13636077