To be fair to Dr Jonathan, I don't think anyone would have looked fast in a RAM or Zakspeed and between 1984 and 1988 he beat all of his team mates. It was only when he was paired alongside Albereto and Alesi in 1989 that he was outclassed.
Apart from this weekends result, Jolyan has looked more than second best to his two team mates at Renault.