Yep, the CG5 is basically the same "level" as the EQ5.
I don't know that there is any "standard" but there seems to be a sort of "build level" associated with each "EQ" number. If something is a "1" you expect certain things, like "cheap and nasty", probably commonly found in department and electronic stores. From a "3" you start to get something fairly well built, although I have never seen anything called an EQ2 or EQ4
