Within-Group Differences

Not all Asian Americans are the same.

There's the matter of...

immigration/refugee status
generations in the host country
specific ethnic group
socioeconomic status

...the list goes on.

This is why it is important to collect disaggregated data.

http://news.yahoo.com/asian-groups-white-house-seek-124150117.html

When the U.S. Census comes around, be sure to be counted.  This is how funding is oftentimes determined with tax dollars.