All I see through this thread is blatant rascism, you lot are so well versed in other cultures that you can't even see beyond your own.
Cabin crew regardless of their language abilities are hired and trained for their customer handling skills and these may not necessarily require a specific language or physical abilities other than those required to communicate.
Bengalis, Indian, Poms, Americans all the same as far as I am concerned, and none stand out for being better educate that others.
So instead of delving in with your inept ignorance please save your time and saliva for a wank, since you've all been busy masturbating your minds over this issue you deserve one!