Sadly it all falls down to bad management because if they're also doing their job, they'll evaluate all personnel & easily distinguish who's not fit for the job though I hate the idea of unfair salary gap but technically with the currency rate involve Asians pretty much earn more compare to Westerners especially when sending it back home. I guess this is one of the reason why most Filipino professional come & goes, because salary gap makes you think, when you know you're more capable of doing the job than your counter part who's earning more, better look for another company.