Absolutely. An applicant with amazing extracurricular activities on top of outstanding grades, AOA, boards, research, etc... is preferred over one without those experiences.
The other thing is, what are you going to talk about during your interviews? No one mentions grades or AOA or boards. Those are already evident on your CV. Yeah, you can discuss research. But what really makes you interesting (both at the pre-interview dinner and during the interview) is what else you bring to the table in terms of your hobbies, your leadership skills, your volunteering spirit, etc... etc...
Now if you're asking if extracurriculars overshadow the other items you mentioned, then no.