What does "highly refined" signify? Are some fuels lowly refined? Odd, as it comes from the same refinery that produces kerosene and diesel.
It resembles diesel more than kerosene because they is what suits jet engines best, I'd have thought that self evident. And as diesel, kerosene and jet Ai are all but identical and pretty much interchangeable the differences between them are miniscule for most practical purposes.
What a curious question!