I work with a bunch of former Alaska fishermen out of Anacortes. That salmon fishery is huge, and their catch ends up all over the world. In fact, the biggest driver of market price is Japan, as they buy a fuckton of it (metric fuckton, of course).
I love salmon, and there's definitely a benefit to getting it in certain places over others. Not so much because of the distance the fish travels (again, refrigeration was invented a long time ago) but because there's an advantage to eating it where it's more prevalent and chefs know how to properly cook it. Japan's a hell of a long ways from Alaska, but I'm betting you're going to get some fucking great wild salmon there. Abu Dhabi... who knows. That place is all about luxury, so you're probably eating at a place where the salmon is $100 and the chef knows his shit. I'd ask if it's wild or farmed, and if they tell me it's farmed or they're not sure, I'd move on. Otherwise, I'd totally try the salmon in Abu Dhabi.
Now, Norman Oklahoma? Yeah... Just give me a steak.