Try to imagine how to solve the second example of the sukhoi README.md using scrapy, you'll notice you'll end up with some kind of obscure logic to achieve that json structure thats outputed by the second example in sukhoi's README.md.
FWIW I don't believe this would be overly convoluted in scrapy. I'd probably scrape the tags and quotes in one pass...
Also, generator expressions would make the examples more readable IMO.
self.extend((tag, QuoteMiner(self.geturl(href))) for tag, href in self.acc)
I would like to see that in scrapy. I think you may have a point about the generators, yea.
The way of how you construct your json structures in scrapy it is different, scrapy has a longer learning curve too. It seems sukhoi has got better results in performance too.