No, not even close. Different flavor profiles, and different overall tastes. AltCig GBC and GCC are tasty, but a bit too sweet for me. Good for short bursts of vaping (about ten minutes) when my sweet tooth is craving something dessert-like. And no tobacco in either of those. Admittedly, the tobacco element in Bounty Hunter is restrained, but it's definitely present. In the AltCig line-up, Tobacco Love---which is their Krave Kutter tobacco combined with the richness of AC's Vanilla Love---is closer to BH, but you'd never mistake one for the other. Again, different flavor profiles due to different source ingredients.
It's funny. You'd think that numerous juice vendors would take aim at Bounty Hunter's huge success and try to emulate it, especially since it seems so simple and straightforward (almost generic), but in reality BH is unique and quite difficult to replicate, in much the same way that Boba's Bounty is unique. Go figure.