Wow lots of points. The thing about brothers is absolutely true. My older and younger brothers have and will kick some serious butt if needed! I've always been around strong willed white guys that don't necessarily look for fights, but will not back down if needed, and would win 90% of fights they engaged in.
About the whites and sports, I totally disagree with the thing about theory made by the sociologist. To paraphrase another famous line quoted by JC, there's lies, damn lies, and sociological theory! There's no good logical reason for whites to be lacking in the higher level of three sports: football, basketball, and sprinting. The theories about "blacks needing college scholarships so they work harder to get sports scholarships" is bunk. The vast majority of college scholarships go to whites. In college, there would be a few times a year when all the student athletes would assemble. Out of more than 100 football players, about 60% were white (I'm sure Whites got about half the fb scholarhips). Blacks where just over half the basketball (but probably got 9 or 10 of 12 scholarships), and track had a number of sprinters, but the T&F team was still majority white. Every other sport, out of twenty to thirty members had 3 or 4 blacks MAX! Some had none! And those sports all get 10 to 15 scholarships. When the athletes assembled, you would see how white they really where. And this was a big time college with a well renowned athletic program.
The theories of whites knowing they can be doctors, lawyers, or astronauts are simply unfounded. Whites are not willing to forgo money, fame, and fortune. They want all that just as much as blacks. If anything, it's easier for a minority who really wanted to be an engineer, lawyer, etc. because they have lots of advocacy groups that would fund their education and help them every step of the way. No such groups for whites who seek that.
Whites in the suburbs can and do compete against blacks and compete well as frequently noted on this site. But, as others have noted, even the coaches of the white teams will say "they may be bigger, stronger, faster, and better athletes, but will be beat them with our heads." The one true thing about football is that once a high school team is 50% black, within two years it will be 90% black. It's not that whites can't compete, it's because their parents don't have the fortitude to keep their kids playing football, and the kids just "go with the flow" and play soccer or lacrosse, which will still be nearly 100% white even at the same school.