Who can say?
Jenn's fitness comes from Jenn's personality, and Jenn's environment and Jenn's experiences. Jenn's fitness with Monica's personality and experiences might not work.
If Monica had Jenn's fitness, maybe she'd have lacked the fire to win the nine GS titles she did. Maybe, with that level of defensive skill, she nver becomes the offensive machine she did. It's like asking how many GS titles would Venus win if she had Jenn's forehand. Who knows? If Venus had Jenn's forehand, would she have worked to make her backhand the weapon it is?
Jenn's fitness comes from Jenn's personality, and Jenn's environment and Jenn's experiences. Jenn's fitness with Monica's personality and experiences might not work.
If Monica had Jenn's fitness, maybe she'd have lacked the fire to win the nine GS titles she did. Maybe, with that level of defensive skill, she nver becomes the offensive machine she did. It's like asking how many GS titles would Venus win if she had Jenn's forehand. Who knows? If Venus had Jenn's forehand, would she have worked to make her backhand the weapon it is?