I think it helped that in the first, I had a much better idea of what was going on. High school girl gets rewind powers, you make choices and the rewind means you can see different outcomes.
Here, I know there are two brothers on the run from, I assume the police, but that's nowhere near as much of a framework in terms of the actual game. Are there powers here too?? How do they affect the narrative/gameplay etc?
This hasn't really been shown, and despite really enjoying Captain Spirit, I'm not motivated to plonk down $40 just yet. Plus BtS had established characters and was released at a much lower cost, so direct comparisons like this aren't super-helpful as the situation's very different. I don't think it's the death knell for episodic games or anything, but I reckon comparing to the original LiS is a better metric, and even then I could understand if it had higher sales for the reasons I outlined above.
I think the actual character choice is fine, and that frankly only a very small (albeit of course still valid) number will be shirking on this game because it's bros instead of a girl. Can't speak to the LGBT angle but imo that was never really played up in the marketing for either LiS or BtS so each to their own, but I can't see that having a huge effect either.