unequaled vs unequalled

unequaled and unequalled both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unequaled	No	Yes	No	No
unequalled	No	Yes	No	No

As adjectives, unequaled and unequalled are synonyms defined as:

Other synonyms of unequaled include alone, unique, unparalleled.

unequaled (adjective)	unequalled (adjective)
radically distinctive and without equal	radically distinctive and without equal