Really!
More than a few things wrong with this article, firstly, 'and IP Storage Area Network' is called a NAS, secondly you do NOT need a fiber switch to connect to Fiber storage, and even if you use a real SAN most have the switch built in now days.
The ONLY way you can get real equality of performance, Fiber to iSCSI/FCoE, would be to use a dedicated network switch with QOS turned WAY up and large IP packets turned on, which negates the cost savings of the IP solution. And the advantage would ONLY be realized using a 10gigE channel. (ie ~7G IP > 4G fiber)