Or probably because these two zones were completely untouched by the Cataclysm, whereas Gilneas is just 2 years old. Hmmm....
---------- Post added 2013-04-26 at 02:51 PM ----------
Of course it could be so, but that'd be a heavy immersion breaker. And be sure, that unless Goblins get Kezan back, you wont see Gilneas as a useful city.