This is nothing to be compared to bitcoin how can it possibly happen that the Facebook coin will be another bitcoin simply because Facebook is the team behind it, and again on the regulatory status it does not happen like that government have laws and to get a regulatory framework for a crypto coin is not that easy so many coins have tried to achieve the full regulations but have not succeeded. Any way we will keep looking out for how the coin will perform in the market.
In crypto market, nothing can be said for sure previously. Although, in reality Facebook business is famous for a technology field, we completely cant make sure whether or not it can beat bitcoin position. As we all know, bitcoin is well-known as the king of crypto market, it's the most dominant coin of the crypto market as a whole, still bitcoin keeps its position almost all people believe in it. Because bitcoin is considered a symbol of cryptocurrency, i don't think facebook's new coin can be a new bitcoin. However, it's just a prediction; thus, every can happen on contrary way.