This has less to do with what Vine did or what V2 does but much more the preferences of the viewers, which will be mainly American. If your videos don’t appeal to Americans there’s little anyone can do. If your videos appeal to Americans will to a very large extent be cultural. In many cases there might be something interesting or funny in your culture, in your country, but for various reasons (e.g. cultural references) viewers in other countries (here in particular the US) simply might not understand your videos. Language is to an extent secondary here, I remember many Vines without a single word being spoken. Slapstick often doesn’t use language, but at least some of it will be cultural and might not be understood in other countries/regions. References to places, certain more local memes, current local affairs, local celebrities etc simply will not be understood in other countries for the most part.