Caveat: *I hate these pigeon holing labels, but for the sake of discussion*
Is it really all down simple physical confrontation?
I don't think that in general 'burb nikkas' are turning down any challenges to actual one on one bare knuckles fights from 'hood nikkas', if that's really all that's all that's on the table, nor do I think 'hood nikkas' go around confidently challenging 'burb nikkas' of similar size and stature to one on one bare knuckle fights, as the reality is that neither 'street smarts' nor 'book smarts' will help you much in that department. Only combat training and fight experience will.
Now, a 'burb nikka' being more willing to shallow his pride and take the high road from petty conflicts, especially with other black people, in high risk, highly volatile environments in which weapons or entourages can easily get involved, an area in which the 'hood nikka' who may value life less might be more comfortable, is a totally different manner. The 'hood nikka' might see that as p*ssy, whereas the 'burb nikka' might see that as smart and rational. I'd lean more towards the 'burb nikka' outlook on that.
The reality is, though, that virtually no black man fits anything close to perfectly in those self-stereotypical boxes. AA male personalities are as diverse as the number of AA men there are out there. I bet none of the people that toss around these labels can give a solid consistent definition of what "the hood" or "the burbs" actually are let alone what makes a person "hood" or "suburban". And it's even worse if you premise the idea that MOST black people are "hood", thus more intune or connected with being black than "burb nikkas", because then you have to have a VERY loose definition of what "the hood" is because the vast majority of black people are NOT lower income inner city residents(not that there's anything inherently wrong with being one).