I beleve nationality is one of the important trademarks of the HBS community. However, what is more important is how you are adept at selling yourself to the HBS adcom, through yout essays, recommendation letters, and interviews.
GMAT, nationality, gender, ethnicity, work experience, GPA, and etc are just hard numbers that tell the Admission almost nothing about one's candidacy.
What distinguishes an admission vs a rejection mostly comes from your background, values, fits with the HBS community, and communication skills revealed in the interview.
At this stage, I would expect they have reviewed at least 300-400+ applications. Be patient, and do some other things, do not reply too much on the end result because more than 700 of us will be rejected in the end.
Move on as if you never applied and focus on the job hunting season in our senior years.
Good luck everyone.