I don't mean to cherry pick a quote out of your overall question here, but I feel Bayonetta is actually an example of the U.S. videogame market becoming more and more harsh to things with heavy Japanese theming.
Darksiders released at the same time as Bayonetta and managed sell twice as much in its first month, despite coming in with lower reviews and a much smaller hype train. What it had in its advantage though were themes and an artstyle that resonate well with Western culture.
Unless I'm blanking out on some games, the only really "Japanese-y" games this generation that have done (at least moderately) well in the West are games that had a strong brand name coming into the generation (Devil May Cry for example) or launched as a notable title close to the system's release (No More Heroes). The few new IPs from Japan that have succeeded this generation have been games that actively tried to appeal to Westerners, with Capcom being a great example of this. Despite achieving strong success with Lost Planet and Dead Rising, they seem to be trying to make the sequels appeal even more to Westerners thematically. The character designs in Lost Planet seem to have gotten a large overhaul in this regard, going from characters like Bandero and Rick to a cast of space marines.
Capcom even listed one of their main reasons for moving Dead Rising 2's development to the West was to try to make it less Japanese.
To tie this back to Japan though, it will be interesting to see how the more Westernized sequels to new IPs fare in Japan. However, since a lot of these launched early in the generation, there might be a lot of factors that prevent an accurate growth comparison.
Same with males (but I don't mate them
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