Huh? Sacred twins only hits 8000 despite only 2 months old, compared t with my Nanoha fic, about 3000 hits, which is 15 and 6 months old respectively.
My To-Love-Ru Crossover story on the other hand has about 200-300 and about 7-8 months old, it's related to the size of fanbase, but not that much.