If you describe something as unparalleled, you are emphasizing that it is, for example, bigger, better, or worse than anything else of its kind, or anything that has happened before.
"he is alone in the field of microbiology""this theory is altogether alone in its penetration of the problem""Bach was unique in his handling of counterpoint""craftsmen whose skill is unequaled""unparalleled athletic ability""a breakdown of law unparalleled in our history"