Is it me or has this become more and more of a theme for new programming languages? Do they even deliver on all these promises?
BASIC itself, through things like peek and poke, can give you the "power of C", and with subroutines if you create a stdlib that you inject, you can certainly make it as high-level and versatile as Python.
That doesn't mean that you get the benefits of C, Python and BASIC all at once though. You've achieved the overly-broad goals, and can say you haven't lied, but the impression the consumer has won't live up to the real world - because they're expecting the cultures and communities of those languages as well.
The newest member of that family is Monkey 2 [0], not to be confused with Thorsten Ball's Monkey [1].