Aakel,
The SPECvirt_sc2013 run and reporting rules do require durability of data on all VMs. (See clause 2.1.2, "...The SUT must utilize stable storage; additionally, stable and durable storage must be used for all VMs as described in SUT Storage.")
The wording relating to the appserver & DB at the end of Clause 3.1.2.2 - Storage Requirements: "Application and Database servers: The Atomicity, Consistency, and Isolation properties of transaction processing systems must be supported." was intended to clarify that in addition to durability for all VMs, the database has atomicity, consistency, and isolation requirements.
Let me know if you have any further questions.