It's not just blacks that fall after a good uppercut or direct to the chin , but these two are well fit for the blacks cause they have weaker chins than whites
I am not really sure of what your point is with this comment here?
I do believe that blacks have inferior chins to white folks.
It does not make a lot of sense to think that black people have weaker chins than white people. There is not really anyway to prove this genetically, so it really just sounds like a racist comment to be honest. Might be a good idea to reflect on this comment so you do not offend anyone.