I think they just mean traditional European fantasy inspiration not too different from the older titles in contrast to Project Dragon having the cherry blossoms and Torii gates.A Western-based Rune Factory, eh?
But yea, Project Dragon looked good to me. Haven't played Rune Factory since the DS era, but this caught my eye. Otherwise, the Marvelous show was kind of weird, mostly just showing concept art and giving a one-word theme for each game. The concept art for that 'Life RPG' gave me Chrono Cross vibes.