An intel based PC with 16GB of fast 1833 RAM running FF14 from fast intel SSD SATA3 took 4-5 sec to load from one zone to another...
Another MMO whence i came from load much more large game zones in 1-2 sec on the same hardware. I think it because of unoptimized PC client code.
I NEVER seen INSTANT load of zone (even small as story instance) in FF14.