Yep, and Japanese versions had Ages 16 (Ayane & Eliot)& 17 (Kasumi & Kokoro).
TN have their chances to include the rest of the girls missing from current DOAX (Tina, Mila, Rachel, Christie, & Lisa), but their direction is creating bunch of new girls. The part on what Japan likes was about how Team Ninja create "new characters" based on regional interest (based on DOA6 Interview when talking about Diego & NiCO) which started from Marie Rose (which is more on how companies create characters).
They still have their chance, actually. And they'll still have their chances currently (only real way they no longer have their chances is if the game gets killed off without any of the other girls being included). Besides, Sakuta D. himself admitted in that 2nd anniversary interview that a large part of the reason why Leifang was included besides promotion of the then-recently announced DOA6 was in fact because there was a very high demand for the cut girls to appear, especially among the Japanese base (remember, Leifang's inclusion occurred WELL before they decided to release DOAXVV to Asia as the closest thing it has to an actual international release). And let's not forget that, with the exception of Christie, all the cut girls' DOA6 trailers debuted in Japan first, and then in America (Christie's trailer seemed to debut in Europe first).
And quite frankly, especially going by the exchange rates I'm being billed with by buying stuff in the game, and most likely the exchange rates everyone else not Japanese is getting from playing the game, TN would have to be idiots to not notice the exchange rates from their paychecks coming in and thus the obvious implication that foreigners are playing their games.
And yeah, I knew about that bit. And since Marie Rose's debut trailer even in the Japanese version listed her age as 18, I'm doubtful they were trying to subtly make her more like those four regarding a younger age (usually, they tend to give their true age in the Japanese version while leave the dummy age overseas to placate the moral guardians. I know that's exactly what they did with Snatcher with Katrina Gibson. She was originally 14 in the Japanese version, and had Gillian Seed acting a LOT more perverted towards her, while overseas, they made her 18 and toned down on Seed's behavior a bit).