It's just penetrating a lot of developing markets as a high def player. People are upgrading from DVD to Blu Ray. Unlike developed countries like the US, where I'm from we don't have streaming services that provide content in HD, so instead we buy discs (Blu Ray). Plus, plenty of people finally find the system affordable after so many years. The gap will be mitigated, but will it surpass it? I have my doubts. Even if it does, buy that time it would not even matter to the great majority of us.
Playstation = The Beast from the East
Sony + Nintendo = WIN! PS3 + PSV + PS4 + Wii U + 3DS