I went to D.C. as a kid before I got into the dope game and I was pitching jumbs at a low level. First trip spent the entire time in a house in SE bottling the work. Had no impression of the city.
Second time I was actually outside pitching. It was tense, but no more so than if I had been in unfamiliar turf in my own city. I thought they had country accents and they looked country, but everything north of Yonkers and South of Staten Island was country to me back then (still to an extent today lol, I'm a New York a$$hole).
I don't think the D.C. cats were any more feared than the New York cats. In fact a lot of the people out there hustling were from NY (no, not just Alpo). That era was about $$, there was no D.C. team banding together to chase the out of towners from the city. As you can imagine they mostly bodied each other.