Anyone who thinks American English is a pidgin language is so woefully ill-informed and out to lunch that one cannot but laugh!

There are an estimated 18 pidgin languages in the world and no, American English is not one of them.

Whether one thinks American English is better or worse than British English is a purely a matter of opinion with no objective context at all. What about Middle English? Why isn't Middle English "better than" modern American or British English?
How about other languages? Russian? Is Russian "better" or "worse" than English? Why or why not? Does the question even make sense?
No it does not make sense.