Hmmm, the way I look at it, if you're claiming your RA/TA experience as NOC 4012 (that is, as a post-graduate research/teaching assistant) rather than, say, a biologist, or an architect, or a psychologist for example, then I think there should not be any problem in getting your work experience credited (since NOC 4012 IS considered a skill level A). I think that was exactly what the message on that link was trying to convey.
However, should the experience prove to be exclusively academic or research nature only, credit will not be given for such experience in order to qualify for the occupation in question.
What they're trying to explain here is probably RA/TA that is trying to claim work experience for one of the 29 accepted occupations. They might fail to pass the eligibility review since the experience might prove to be purely academic or research only in nature, and not really aligned with the job descriptions of the intended NOC that they are trying to claim experience of.
Once again, I know several people whose PR applications were approved, claiming ONLY TA/RA experience (either CEC or FSW), and while rules have probably changed by quite a bit since then, there hasn't really been any change in recognizing NOC 4012 (or formerly, NOC 4122) as skill level A, nor has there been any change in NOC description for post-graduate teaching/research assistantship.
And regarding the purely academic or research nature of the work experience, reading NOC descriptions for NOC 4012, it only mentions research and teaching activities, and there doesn't seem to be any limitation as to what nature of the research would be accepted.
http://www.statcan.gc.ca/cgi-bin/imdb/p3VD.pl?Function=getVDDetail&db=imdb&dis=2&adm=8&TVD=122372&CVD=122376&CPV=4012&CST=01012011&MLV=4&CLV=4&CHVD=
And oh, it also mentions that enrollment in a university or college program is required, which implies that the kind of research or teaching activities that you do while being enrolled in a university program fall under NOC 4012, which is, once again, considered a skill level A
Anyway, I can extrapolate all day long, and in the end, it is the visa officers that will make the final decision. All we can do is wait and see (and hope for favorable decisions obviously).
Anyway, anjuku, it is nice to meet fellow UWaterloo student here
