SQA robot and Ratinal Robot are the products of IBM Products.Noramally used for testing IBM application.

SQA robot and Rational Robot are one and same .But only differneces is the advanced verion of SQA Robot is Rational Robot.

Using Rational Robot tool we can do both type of testing i.e system testing and the performance testing.
If you use functional or system testing
You have to select the SQA basic language.
or
If you are going to test the performance means you may select VB language
Both are built-in Rational Robot tool
They are nothing but the scripting languages used in that tool

Update me if I am incorrect