Gavin Andresen tweet,
http://junseth.com/post/112626834687/stop-talking-about-confirmation-speeds-start
 Dark Coin was built, originally, to solve the anonymity problem. Now they introduced what they think is a fix to confirmation times. And yet, it has a fraction of the hashing power being pumped into it.

All of bitcoins hashing is from 1 pool so how is petahashs any better than gigahashes of mining in keeping the network stable, and also the decentralized masternode system should keep the network doublely stable as an extra network layer, or am I missing something?