http://cdn.bulbagarden.net/upload/thumb/e/e6/Mesprit_Azelf_Uxie_anime.png/250px-Mesprit_Azelf_Uxie_anime.png (Unsupported image host)

are these the people you are referring to?

Let me explain something, when I say sub-legendary, I mean the legendaries that are not exactly a part of the main story or have no real story at all. They are just there for the sake of having more than one legendary in the game at a time.

Latios and Latias are like the easiest legendaries to catch as of GEN5

Sorry, my views on legendaries don't match up with the actual definition. To me, they are like the demi gods of the gods.