Jorn has been "accused" to be too much Coverdale in the past (especially with the Snakes) and/or in his cover of 'Burn' on "Starfire".
If it's true that his vocal melodies remind a lot those of Coverdale I give Jorn the credit to be one of the best singers in business these days. If you can check also Millenium, Ark and his solo work besides Masterplan.