DAG in fact are really interesting. However, the battle DAG vs Blockchain isn't not a case for today. First of all we need a mass adoption of both technologies to decide whether DAG or blockchain is better.

We should also take into account DLT protocols like Corda or Hyperledger, which in fact are in the middle to blockchain and DAG, but are able to overachieve scalability and performance of blockchain and centralization of DAG.
Unfortunately this protocols are not suitable for non-enterprise grade solutions.