Difference between CLA and plain safflower oil

I have been trying to understand the difference of CLA (conjugated linoleic acid) and ordinary Safflower oil. CLA is produced from Safflower oil and if you see the ingredients of a CLA product, you will actually see safflower oil. So what is the difference and why should anyone use CLA if he is already taking safflower oil, olive oil, linseed oil and fish oil?

It is also advertised that it assists in weight loss. Doesn't plain Safflower oil do the same?

The specific CLA isomers are what have the "purported" benefits (cis-9, trans-11 & trans-10,cis-12) and the raws contain a host of other FAs. CLA is a concentrated source of those.

Happened to find a comparison btw safflower & CLA.
[url]http://jn.nutrition.org/cgi/content/full/133/1/257S[/url]

Some further research will likely uncover others.