Yeah that's probs what she meant, and it's not surprising, since rarely do GHs have more than one single (or even more than one new song), and even more rarely are both singles well-received by the public.
And "Heartbreak Down" could easily be a top ten hit too!
Not in the Billboard Hot 100, though (I think)... She didn't include it in the U.S. version of GH...SF!!! (which is a shame, because I very much like that song; thank God I got the international version!).