[ascar]

Well you are kinda comparing apples and oranges here.

According to their readme they don't just match on keys, but even try to detect changed keys for the same content, even when the two files have a different inner order of elements.

Your diff is probably equivalent to a pretty print and then running regular diff on it, i.e. not even sorting the file.

Having said that and assuming your file wasn't extraordinary large, a 5min runtime makes this tool kinda unusable.