It absolutely does not. Not for DOA5 or any game in the series prior. Catherine is a game about the stress of relationships and the allure of sex. It serves a theme and message.
The girls in DOA are sexualized because it sells games.
I meant that the idea of context works in the same way, not that the context is the same.
The characters are sexualised to sell the games and because the fanbase that they've built up appreciates it at the least and demands it at most.
On the other hand, the characters are all fighters with strong personalities who are, for the most part, entirely cognisant of the outfits that they're wearing. The most sexualised characters, such as Lisa and Christie, have femme fatale style personalities, so it seems perfectly fine to me that they'd dress like that. Not to mention that the most heavily sexualised outfits are what would be considered 'normal' in the anime that you're talking about.
The same doesn't apply to Ninja Gaiden, sure, but I've been openly critical of Ninja Gaiden's design. I even made a topic about it!
Comparatively, a fifteen year old anime character with knocked-knees who is completely oblivious to sex and seduction and blah blah blah who is wearing a tiny skirt and stockings is gross.
And before you respond: Please don't cite the fetishization of pre-teen/teen girls. Tecmo said Kasumi/Ayane were 14-year-olds for years, yet they've had breasts bigger then the average adult woman from day one.
16, actually.