Based on your attached document, there is many other factors that represent the iSCSI is better than the NFS in some cases, like the following list:
1. VMware PSA and load-balancing feature that is enable for the iSCSI, FC & FCoE, not the NFS.
2. iSCSI supports CHAP for authentication and improving the security.
3. Raw Device Mapping (RDM) feature is not supported by the NFS, but the iSCSI can do.
4. Boot from SAN is possible via the iSCSI not the NFS.
But regardless of comparing storage protocols, in many situations you can obtain benefits of both iSCSI and NFS. Ease of implementing and configuration for the NFS is a good characteristic but for the most of advanced features there are many shortcoming, especially in the lower versions of the NFS.
