Is "buffeted" the AmE version of the BrE word "buffetted"?

Actually all online dictionaries suggest buffeting and buffeted with one single “t” as present participle, simple past, and and past participle of to buffet. Only wiktionary mentions the alternative double t forms.

Checking with Google Books it appears that it is not an AmE vs BrE issue, but rather an archaic usage, present in the Bible for instance, that may have survived as non-standard form.

I believe this has to do with the rules for doubling final consonants, and nothing to do with AmE or BrE.

According to Ann Carr at Owlcation,

Rule 4: Don't Double in a Root Word With More Than One Syllable When Last Syllable Not Stressed

In a word with more than one syllable there is no doubling of the last consonant unless the stress is on the last syllable.

Merriam-Webster learner's dictionary gives the same rule:

In a word with 2 or more syllables, double the final consonant ONLY if the word ends in 1 vowel + 1 consonant AND the final syllable is stressed.

BBC Skillswise - English and Maths for adults confirms this too (see rule 4).

Study.com has a great video explaining the consonant rules