There's no playing coy. Western markets didn't crash. Only the US crashed, Europe didn't.
Western market crashed mate the NES got things back in order that 8m was not a flop like you want to paint it it was a massive success as those numbers were never reached before in Europe you're using logic flawed on a number of levels here EU compared to US was not even a blip back in those days before NES came into play then it was shown the was a viable market there. A flop is not a product that is the most successful of its era otherwise under your logic any game that hasn't sold as much as Wii Sports and GTAV are flops.