Thanks for the information! This sounds really interesting - definitely something that I will try to prioritize watching (amongst the many, many, many other good shows that I have yet to see).
The comparison is actually more specific: it's saying that the Refrain route is analogous to the After Story route, which signals that there's something more to Little Busters than the common route would have you think.
Refrain finale:
SPOILER: Highlight text to read: Man, that was good! The narcolepsy explanation, the entire rescue, all the Kyousuke feels, and the very happy end-- beautiful. And now it's time to dig into the VN for the full experience/impact of this great story!