Is Fitness Boxing's 'Teen' ESRB rating justified?

The ESRB has been around for quite some time, and most of us are aware of both the game ratings and their descriptors. While people usually don't bat an eye at what the ESRB does, Fitness Boxing's rating has been causing quite a stir.

For those who don't know, Fitness Boxing is a Switch game that focuses on providing a dance/exercise experience in order to help the user get a bit more active in a fun way. The game provides you with male/female trainer options, and your trainer choice will accompany you during your routines for instruction and encouragement. Sounds like a game that would be rated E for Everyone, right? According to the ESRB, Fitness Boxing deserved a Teen rating.

If you read through the ESRB rating, you see the game marked as having 'suggestive themes.' Go a bit further into the rating and you see where that descriptor comes from.

All of the female characters have breast physics incorporated into their movements; their breasts frequently jiggle/bounce in a noticeable manner during stretching and boxing routines.

There have certainly been games that feature breast physics before. We most often see it in fighting games, where it's pretty obvious that the breast movement has been over-exaggerated. Our understanding is that things are different in Fitness Boxing. The breast movement you see in-game is realistic, and not designed in a sexually suggestive manner. This sentiment has been echoed by other female gamers, including DualShockers Community Manager, Audrey Lips.

“I don’t believe the game should be rated ‘T’ for the jiggle physics alone. Having jiggle physics, while not entirely necessary in my opinion, also isn’t anything that is too overtly sexual. It’s how a woman’s body would naturally respond if they were to be boxing like that in real life and in the game.”

It's certainly an interesting discussion. The development team decided to include female trainers that bustlines of a certain size, and animated them realistically. When something like this is done for realism's sake, and attention isn't drawn to the bustline to purposefully titillate, does it warrant a suggestive themes tag?