Why do you think the titanforged have a greater variety of accents than their bosses?

I'm operating under the assumption that Blizz never directly explain this (I truly don't know if they did).

Titans and titan keepers seem to have British and American accents. Titanforged on the other hand seem to have a greater variety. Their accents seem inspired by the mythology that their respective zones are based on. For example:

Pandaria: East Asian mythology and East Asian sounding accents from the Mogu.

Uldum: Ancient Egyptian mythology and Middle Eastern sounding accents.

Ulduar: Norse mythology and Scandinavian sounding accents.

I don't know how authentic these accents actually sound but I'm just assuming that this is what they were going for.

Of course, we still have British and American accents like the titans and titan keepers. I just found it interesting that their accents have less variety than the titanforged themselves. I guess part of the reason could be that the titanforged outnumber their bosses by alot, so there's more oppurtunity for the natural development of more accents. More likely, Blizz just thought it would be cool to add more accents so that the game could have more variety.

Anyways, I find it interesting to speculate about. What do you think?