Maybe not the black male part. But the "competent woman" and "bumbling helpless male" is an extremely common TV commercial trope once you're paying attention.
It's not really a commercial trope so much as a TV sitcom trope, going back at least as far as the Honeymooners.
It's also not as common as it used to be, as far as I can tell.
Edit: I've been thinking about it, and I don't think I can recall ever actually seeing "black male rescuing a white woman from a white male" being used in an advertisement, anywhere. Typically such a motif is used to present the black male as a threat, not as somehow heroically superior to his white counterpart.
Even then I can only recall its use in political advertisements (such as the infamous "Willie Horton" ad) and maybe very old movies.
Yeah, that… really doesn't sound as common a theme as you imply