Stats on race are useless. No one can draw any real conclusions by looking at how Asians, for example, adapt to life in Canada, because Asian communities in Canada do not form on the basis of being Asian, they form along cultural and national lines (Chinese, Korean, Filipino, etc.). Race would be a false category. It is more useful to track people as a community based around culture and shared heritage. If the community remains cohesive (like the Chinese community in Vancouver) then it's useful to track that community's development in Canada - at least for informational purposes and to measure the success of integration. Incidentally, the Chinese community is extremely successful in Canada.
Does this say something about Chinese people? Well, Chinese people in other places aren't as successful and sometimes they are more successful. Chinese people in China are all differently successful (most of them poor). What factors into Chinese success in Canada is not some racial characteristic or cultural one. Some culture yes, but probably more an immigrant culture not a Chinese one. It's mostly circumstance, I'd say. It is certainly circumstance in China and there are places in the world where the Chinese diaspora makes up ruling elite.
If the community was no longer cohesive, statistics would be less significant. But their conditions in earlier times could still affect them. The Chinese community at the moment is largely urban. If the Chinese community over time breaks down as a community, assimilates and intermarries more, they may no longer stand out as much from the general population, though they would still likely be concentrated in urban areas and economically and educationally match the urban population more than the rural one (and their early economic and educational success would carry over to their descendents.
It is probably the case with Europeans that individual nationalities have melded together and it wouldn't be significant to separate them and, say, determine the success of Germans compared to the British and French populations. But, as Germans were in the past concentrated in the prairies provinces, you might find a slightly prairie character to statistics on the German population. Who knows? Trends in recent European immigrants can be tracked, though there are fewer of them. And the French, of course, have remained a separate community owing to their size and political and cultural organization.
A good non-white example of less cohesive community would be the Japanese community in Richmond, BC. This community maintains its self-identification but is for the most part culturally completely integrated. They are on their 4th generation now, I believe. In the past, theirs was a fishing community and as such the Japanese people in Richmond tend to be working class (and due to changes in the area's economy, suburban middle class.) (there was also the internment camps and state-sponsored theft of their homes and livelihoods during the war that contributed) Chinese in Richmond tend to be more wealthy and more white collar, despite their more recent arrival. The Japanese and Chinese are both Asian, but the differences between them makes it useless to measure them as a group together.