I'm probably a lot older than most of the guys responding to this, so I may have the benefit of time on my side, plus another interesting perspective.( I'm Black and 63).
First, Black guys who date other black guys don't show up in mainly white gay neighborhoods. I am saying this based on living in San Francisco for 30 years (not there any more) and having had a business in the Castro for 18 years. So, many of my white friends would say "you only date white guys," which I'd point out was not only wrong, but pretty racist on their part (if they had ever had intimate conversations with me about this subject before stating their [inaccurate] statement, I'd have been ok with it). When they'd protest that that was all they saw me with (and I didn't even date many White guys, although I was one of 3 Black guys who was considered "hot" back in say, 1977, because I was built even in high school and just supplemented my natural build with working out when I moved to SF in 1975) and got most of my attention from white guys, I'd point out that I didn't meet Black guys in the Castro. The ones who were there were my buddies (there weren't that many Black guys IN the Castro in 1975-90. That's also why Marlon Rigss produced his breakthrough film, Tongues Untied). And that, due mostly to the fact that I danced a LOT, and my best friend was one of THE diva djs of the era - and he was Black also. So, by dint of wherever I danced, 99% of the guys were white. And, due to that, I didn't see Black guys in those clubs (SF had had protests by Black gay/lesbians that they were discriminated against, shown as excessive "carding" at the door. This led to the carding being dropped - then. After I left in 2002, it started happening again at the Badlands, which I found ironic, since I was one of the head djs at the Badlands when they were the first stand up bar to have a live dj booth. To have it happen in the very club where there were 2 Black djs - and my friend made it very popular as he was friends with all the "hot" white guys, who came by on Sunday to pay homage to him). I'd have to SEARCH to find Black guys I was interested in, and that was tiresome.
Many of the Black guys I knew in the Castro were my buddies, so that left me with a non-existent pool of brothers to date. I would've loved to be able to choose, but unless I wanted to drive to Oakland, that wasn't happening. So, from my experience and my best friend, who was a world-class hot Black man, we didn't see many options.
Now for the kicker, mentioned earlier in this post.
Even if we were good enough to "date" (I put quotations around that. You'll see why) and have a White guy as a boyfriend, it rarely meant they were interested in me seriously. I was more a "trophy" Black guy, and I am pretty smart. I figured out that they'd enjoy their time with me, but wouldn't have considered marrying me or having me for a permanent lover. I found this out when another very cute Black guy said, a friend of his said that a White guy told him, "I'd have sex with a black guy, and have one for a boyfriend, but I'd never marry one." When I heard that, i stared at him and he at me. We just were silent for a few minutes and shook our heads, but realized, with the significant dating experience we had in SF, that it was a truism we hadn't thought of. So, the "we're not good enough for them" statement? Unfortunately true. BACK THEN. It may have changed now, but human nature doesn't change greatly over decades; centuries,yes. Decades? No.
When I first moved to SF, I came across a bar, Bojangles, which was all Black (and, ironically, owned by the same man who owned the Badlands, Ron Holmes. Ron liked Black men, but even then, he did not want the Badlands to have a high Black clientele. I know because my lover was the manager and around Ron's age, and Ron adored him, so Ben told me everything. Ben, by the way was White). So, here was a dichotomy, similar to having a mistress but not wanting to be seen with her publicly. (Human nature is so complex in its rationalizations.) The question - and one every ntelligent Black guy in SF knew, was: are you dating me for your fantasy (Mandingo complex) or are you dating me because you really, really like me? (calling Sally Field) Merely "dating" when someone is white and you're Black doesn't mean they don't have control issues, of the kind that the Asian gay men told me about ("they think ALL Asian men are submissive and that's why they like us. When it doesn't turn out that way, they look for someone who fits their stereotype." (See? It doesn't just happen to Black men.) So, even when you're dating, you may find the experience was for something other than your character. That rarely happened when a brother liked me, and if I had my way, I'd have chosen another brother. I placed ads in the SF Bay Times, and was a highly visible guy. Of course, my size (build) was intimidating to most guys, Black or White, but brothers still would wolf-whistle or acknowledge me more easily. It just happened that there were so few around, I didn't have the sheer numbers to choose whom I'd want to date (this was mostly in the 70s. By the 80s, Ben was my lover, so I wasn't looking, except for two periods where we separated for months, and then I was available)
And I'm half Black, part white and part Chickahominy Indian.
To sum it up, if you were in the Castro, you probably were fine with White guys hitting on you, but even then, among my Black friends, if they met a fine brother, they'd go after him in a minute. Because the brother didn't see them thru the eyes of "race," not because they themselves were hobbled by it. And I will say, some of the White guys were very genuine, too. The sweetest boyfriend I had was White, and man, he was just a honey. The only reason we didn't end up together was he moved away.
So, stats tell but part of the story. I'd love to be married to a brother, but we'd have to click on all the same levels it would have to be with ANYONE, regardless of color: spirituality, emotional depth, personality and physical interest.
The "scene" is changed a little since I left SF in 2002, to move back to CT (family reasons), but not that much, according to the other Black guys of my generation who still live in the Bay Area. I suppose if I lived in Oakland, the stats would change as to whom I'd be able to date. This is just a story to widen the initial post, and the 'stats.' Stats don't tell the whole story.