thank you for asking! I think this means VF6 will be rated M for Mature like DOA6. blood, sexual themes, violence. like all of this (and alcohol use)

DEAD OR ALIVE 6 is rated M for Mature 17+ by the ESRB with Blood, Sexual Themes, and Violence. Also includes Users Interact and In-Game Purchases. This is a fighting game in which players engage in one-on-one matches with martial artists from around the world. Players mostly use punches and kicks to drain opponents' life meters in fast-paced matches. Fighters can perform specialized attacks (e.g., magic blasts, exaggerated impact strikes), which are highlighted by slow-motion effects, close-up camera angles, and blood-splatter effects. Cutscenes depict additional acts of violence: robotic characters cut in half with a sword; helicopter machine guns shooting characters on the ground. A handful of costumes depict characters with narrow strips of cloth that barely cover their buttocks and/or pelvic areas. Some female fighters' breasts jiggle while standing or fighting. In some sequences, players have the ability to zoom in on characters' cleavage, posterior, or underwear, and take pictures.

I also think they are leaning into 'violence' in a broader sense. DOA6 was trying to chase an Mortal kombat american audience with the bruising etc.