Nope - different manufacturers, different set-up. Responder has a push-button tail switch, the Stealthlight a side-mounted lever switch. Responder has wide/spot focus (and associated beam artifacts), Stealthlite has fixed laser spot, with a better (though not flawless, by any means) beam. Stealthlight is dive-rated, Responder is not (at least that I'm aware of).
I own and like very much the Stealthlite - don't have the Bright Star, so I can't give much in the way of first-hand feedback, though I will say that I think the Pelican products are overall of higher material and build quality than the Koehler-Bright Star products.