While the Lupin vs Conan epic collaboration is also geared towards the family-friendly sort of audience, its 19.5% rating is pretty significant. (Last week's top-ranked show, for comparison, was a Chibi Maruko-chan special, which got 17%; the week prior had Sazae-san at 19.8% and Chibi Maruko-chan at 13%.
So, congratulations to Lupin and Conan! Now we just have to wait and see if someone (FUNimation, most likely, since they have Case Closed and eight of the Lupin movies and specials already) snatches it up for a quick US release. I'd buy it in a heartbeat!