Again, empty statistics. Asian-Americans are over-represented in certain professions, fair enough, but that does not in itself tell us very much. What proportion of the population do these professions represent? What income range does the profession represent, what's the income range for Asian-Americans in the profession, how is that weighted by age and region? Does this vary between Asian sub-groups. What, in short, is the significance of this number? You need to address this stuff at least in sketch, acknowledge that it's a factor and present an issue of what it
might look like.
You need to make the statistics
mean something, or you're just relying on blind assumption. I'm not even saying that you're wrong, here, just that the statistics are not some conclusive argument, because they are not yet an argument, any more than a lump of ore is a shovel.
Remember, the issue here is not "are Asian-Americans better represented among the middle class". That's probably true for at least certain Asian ethnic and generational sub-groups. The issue is how this ties to stereotyping and prejudice: whether this fact allows us to regard stereotyping as irrelevant, and whether there's any basis for Timsup2nothin's contentious arguments that some Asian stereotypes are actively beneficial to people in those careers, that the stereotypes, that the stereotypes encourage people to enter those careers, and whether any of that is any comfort to the majority of Asian-Americans who are not in those careers.
I have to ask though, are you saying now that you find the idea that Asians are "doing better" to be a myth, supported by a misleading interpretation of statistics? It kind of seems like that is what you are arguing based on you referencing this per capita income chart.
I don't think it's a myth, but I think it's an oversimplification. The argument runs "I knew a bunch of Asian dentists, therefore, most Asians are dentists-or-equivalent", and because median household income seem superficially consistent with that, it's cited as proof. But in the absence of context, it's not proof of anything but what it directly represents, that Asian-Americans taken as a group have a higher median household income than other racial categories taken as a group. There's no context, and the fact that introducing even a similarly-vague statistic like per capita income overturns the correlation makes it clear that the dynamics we're looking at are considerably more complex than the initial claim allows. (The fact that the wiki page I linked breaks it down by ethnicity and not just race, reminding us that the circumstances of the median Japanese-American and the median Lao-Americans are very different and therefore calling generalisations about "Asians" into question, is just a bonus.)