The writing style might be different, but I think mostly it is the presentation that is different. Other than that BS offers everything FA does and most importantly: kinks and skills matter. Decisions matter. Even the prologue offers multiple variants that make the game replayable. One can argue that there are bugs or that not everything is balanced out, but everything the game offers, actually does something. That and they have done more in six months than Crush has in 5 years. Depending on where they want to take the story, it is not unreasonable to think that they will have caught up to Crush or will even overtake him by the end of 2024. And that includes an entire lifepath, multiple choices, paths, skills and what not. So in terms of who is more competent, it isn't even close, even if BS stopped development tomorrow.Not sure I agree that they are more competent. Quicker perhaps, to get content out. I think Female Agent's writing is significantly better than Blue Swallow, even with its flaws (not into trans stuff, so I haven't bothered with Girl Spy).
FA is just a novel with an illusion of half a dozen mechanics that aren't even real or don't do anything. Heck, there are still scenes that use placeholder images after x years, because Crush never looks back and cleans up his mess. Quite frankly, I am surprised that he did not rush a Christmas update, but then again, the next update should be due around February and AFAIK he hasn't announced what it's going to be.