Railroad was a poor choice of words on my part. In my group, the term doesn't have the same negative connotation it does in the wider community. When we play an AP, we know that the story is on rails, and while there may be some deviation by the PCs here and there, ultimately you're going to hit all the major plot points and fight all the villains as laid out in the story of the AP.
As if this was somehow rare in Classic? Given that 1e had the Slavers-Giants-Drow series that is the basis for the modern AP form, I'm not so sure it's a solid line to draw, or a solid statement to make that the classic play didn't have this going on. Thus, the dichotomy does not seem at all strong, to me.
Be that as it may, though, I'm not worried about the negative connotations of "railroad". I'm saying that where I come from, "story focused" does not equate to "focused on pre-written story".
In fact, I'd say quite the opposite. If the game relies on pre-writing to get a good story, then the *game* is not itself story focused. A game that has mechanics that reward making choices for good story or dramatic reasons (rather than for either good tactical or strategic reasons) would be story-focused.